diff --git a/source/RobotAPI/components/SkillObserver/SkillObserver.h b/source/RobotAPI/components/SkillObserver/SkillObserver.h
index 54fc0ca89f9d57cba62f2a5ca2a65b452db3d8ca..b9f927312888048a01bedcfdc53dadce6b6902ba 100644
--- a/source/RobotAPI/components/SkillObserver/SkillObserver.h
+++ b/source/RobotAPI/components/SkillObserver/SkillObserver.h
@@ -24,6 +24,10 @@
 
 #include <mutex>
 #include <thread>
+#include <string>
+#include <vector>
+#include <mutex>
+#include <map>
 
 #include <ArmarXCore/core/Component.h>
 
diff --git a/source/RobotAPI/interface/armem/query.ice b/source/RobotAPI/interface/armem/query.ice
index 2a0eb6e217a769fe4bab33dd0ab896e2faeda8e5..2a1586fece346e89cbe491cd21c026ddab603e0e 100644
--- a/source/RobotAPI/interface/armem/query.ice
+++ b/source/RobotAPI/interface/armem/query.ice
@@ -13,15 +13,16 @@ module armarx
             {
                 enum QueryTarget
                 {
-                    WMAndLTM,
                     WM,
-                    LTM // only for debug. remove later
+                    LTM,
+                    Disk
                 };
+                sequence<QueryTarget> QueryTargets;
 
                 /// Which entity snapshots to get from an entity?
                 class EntityQuery
                 {
-                    QueryTarget target = QueryTarget::WMAndLTM;
+                    QueryTargets targets;
                 };
                 sequence<EntityQuery> EntityQuerySeq;
 
@@ -115,7 +116,7 @@ module armarx
                 class ProviderSegmentQuery
                 {
                     EntityQuerySeq entityQueries;
-                    QueryTarget target = QueryTarget::WMAndLTM;
+                    QueryTargets targets;
                 };
                 sequence<ProviderSegmentQuery> ProviderSegmentQuerySeq;
                 module provider
@@ -138,7 +139,7 @@ module armarx
                 class CoreSegmentQuery
                 {
                     ProviderSegmentQuerySeq providerSegmentQueries;
-                    QueryTarget target = QueryTarget::WMAndLTM;
+                    QueryTargets targets;
                 };
                 sequence<CoreSegmentQuery> CoreSegmentQuerySeq;
 
@@ -162,7 +163,7 @@ module armarx
                 class MemoryQuery
                 {
                     CoreSegmentQuerySeq coreSegmentQueries;
-                    QueryTarget target = QueryTarget::WMAndLTM;
+                    QueryTargets targets;
                 };
                 sequence<MemoryQuery> MemoryQuerySeq;
                 dictionary<string, MemoryQuerySeq> MemoryQueriesDict;
@@ -188,7 +189,6 @@ module armarx
                 {
                     /// Dict of memory name to
                     MemoryQueriesDict memoryQueries;
-                    QueryTarget target = QueryTarget::WMAndLTM;
                 };
 
                 struct Input
diff --git a/source/RobotAPI/libraries/armem/CMakeLists.txt b/source/RobotAPI/libraries/armem/CMakeLists.txt
index 73d3ba403a1ce700891e2351a848e35fd62c8457..7dd0264f185753bf4ee2a42831987f1d3166ee32 100644
--- a/source/RobotAPI/libraries/armem/CMakeLists.txt
+++ b/source/RobotAPI/libraries/armem/CMakeLists.txt
@@ -122,6 +122,12 @@ set(LIB_FILES
     server/query_proc/longtermmemory/CoreSegmentQueryProcessor.cpp
     server/query_proc/longtermmemory/MemoryQueryProcessor.cpp
 
+    server/query_proc/diskmemory/BaseQueryProcessor.cpp
+    server/query_proc/diskmemory/EntityQueryProcessor.cpp
+    server/query_proc/diskmemory/ProviderSegmentQueryProcessor.cpp
+    server/query_proc/diskmemory/CoreSegmentQueryProcessor.cpp
+    server/query_proc/diskmemory/MemoryQueryProcessor.cpp
+
     mns/MemoryNameSystem.cpp
     mns/ComponentPlugin.cpp
 
@@ -238,6 +244,12 @@ set(LIB_HEADERS
     server/query_proc/longtermmemory/CoreSegmentQueryProcessor.h
     server/query_proc/longtermmemory/MemoryQueryProcessor.h
 
+    server/query_proc/diskmemory/BaseQueryProcessor.h
+    server/query_proc/diskmemory/EntityQueryProcessor.h
+    server/query_proc/diskmemory/ProviderSegmentQueryProcessor.h
+    server/query_proc/diskmemory/CoreSegmentQueryProcessor.h
+    server/query_proc/diskmemory/MemoryQueryProcessor.h
+
     mns.h
     mns/MemoryNameSystem.h
     mns/ComponentPlugin.h
diff --git a/source/RobotAPI/libraries/armem/client/Query.h b/source/RobotAPI/libraries/armem/client/Query.h
index 4f5a87bdccfc84458210d0811b02d99275b54ae4..916278a8fcde1679545ed39d59531f5772852c13 100644
--- a/source/RobotAPI/libraries/armem/client/Query.h
+++ b/source/RobotAPI/libraries/armem/client/Query.h
@@ -28,6 +28,37 @@ namespace armarx::armem::client
         armem::query::data::MemoryQuerySeq memoryQueries;
         DataMode dataMode;
 
+        void addQueryTargetToAll(const armem::query::data::QueryTarget t)
+        {
+            for (const auto& memoryQuery : memoryQueries)
+            {
+                if (std::find(memoryQuery->targets.begin(), memoryQuery->targets.end(), t) == memoryQuery->targets.end())
+                {
+                    memoryQuery->targets.push_back(t);
+                }
+                for (const auto& coreSegmentQuery : memoryQuery->coreSegmentQueries)
+                {
+                    if (std::find(coreSegmentQuery->targets.begin(), coreSegmentQuery->targets.end(), t) == coreSegmentQuery->targets.end())
+                    {
+                        coreSegmentQuery->targets.push_back(t);
+                    }
+                    for (const auto& providerSegmentQuery : coreSegmentQuery->providerSegmentQueries)
+                    {
+                        if (std::find(providerSegmentQuery->targets.begin(), providerSegmentQuery->targets.end(), t) == providerSegmentQuery->targets.end())
+                        {
+                            providerSegmentQuery->targets.push_back(t);
+                        }
+                        for (const auto& entityQuery : providerSegmentQuery->entityQueries)
+                        {
+                            if (std::find(entityQuery->targets.begin(), entityQuery->targets.end(), t) == entityQuery->targets.end())
+                            {
+                                entityQuery->targets.push_back(t);
+                            }
+                        }
+                    }
+                }
+            }
+        }
 
         static QueryInput fromIce(const armem::query::data::Input& ice);
         armem::query::data::Input toIce() const;
diff --git a/source/RobotAPI/libraries/armem/client/query/Builder.cpp b/source/RobotAPI/libraries/armem/client/query/Builder.cpp
index 5979ea365a863dc0ce1c0c0b91a0d77fc3f331e9..59ae0b7c082bc25a8b1084f8ac49611df107d132 100644
--- a/source/RobotAPI/libraries/armem/client/query/Builder.cpp
+++ b/source/RobotAPI/libraries/armem/client/query/Builder.cpp
@@ -8,12 +8,6 @@ namespace armarx::armem::client::query
     {
     }
 
-    Builder& Builder::queryTarget(const armem::query::data::QueryTarget target)
-    {
-        this->_target = target;
-        return *this;
-    }
-
     QueryInput Builder::buildQueryInput() const
     {
         QueryInput input;
@@ -31,9 +25,9 @@ namespace armarx::armem::client::query
         armem::query::data::MemoryQuerySeq memoryQueries;
         for (const CoreSegmentSelector& child : _children)
         {
-            for (const armem::query::data::MemoryQueryPtr& query : child.buildQueries())
+            for (armem::query::data::MemoryQueryPtr& query : child.buildQueries())
             {
-                query->target = _target;
+                query->targets = _targets;
                 memoryQueries.push_back(query);
             }
         }
diff --git a/source/RobotAPI/libraries/armem/client/query/Builder.h b/source/RobotAPI/libraries/armem/client/query/Builder.h
index eae09294320f216aa3e996821c429376ff7675a0..dc6147ef03e7de81518e64bddc9bb486f0062b07 100644
--- a/source/RobotAPI/libraries/armem/client/query/Builder.h
+++ b/source/RobotAPI/libraries/armem/client/query/Builder.h
@@ -28,7 +28,6 @@ namespace armarx::armem::client::query
     public:
 
         Builder(DataMode dataMode = DataMode::WithData);
-        Builder& queryTarget(const armem::query::data::QueryTarget target);
 
         /// Start specifying core segments.
         CoreSegmentSelector& coreSegments();
@@ -66,7 +65,6 @@ namespace armarx::armem::client::query
 
 
     public:
-        armem::query::data::QueryTarget _target = armem::query::data::QueryTarget::WMAndLTM;
         DataMode dataMode;
 
     };
diff --git a/source/RobotAPI/libraries/armem/client/query/detail/SelectorOps.h b/source/RobotAPI/libraries/armem/client/query/detail/SelectorOps.h
index 0a0e89e0ab7f651aa40ff3e2f564d48293f64a40..c6e153f0d7358b318c6966f2c9d5c9c2c35579a4 100644
--- a/source/RobotAPI/libraries/armem/client/query/detail/SelectorOps.h
+++ b/source/RobotAPI/libraries/armem/client/query/detail/SelectorOps.h
@@ -5,6 +5,7 @@
 #include <Ice/Handle.h>
 
 #include <RobotAPI/libraries/armem/core/MemoryID.h>
+#include <RobotAPI/interface/armem/query.h>
 
 
 namespace armarx::armem::client::query::detail
@@ -17,7 +18,11 @@ namespace armarx::armem::client::query::detail
         using DerivedT = _DerivedT;
         using QueryT = _QueryT;
 
-        virtual ~ChildSelectorOps() = default;
+        ChildSelectorOps() = delete;
+
+        ChildSelectorOps(const armem::query::data::QueryTargets& p) :
+            _parentTargets(p)
+        {}
 
 
         virtual DerivedT& all() = 0;
@@ -36,6 +41,9 @@ namespace armarx::armem::client::query::detail
             }
         }
 
+    protected:
+        armem::query::data::QueryTargets _parentTargets;
+
 
     protected:
 
@@ -81,11 +89,21 @@ namespace armarx::armem::client::query::detail
         using ChildT = _ChildT;
 
 
+    public:
+        virtual ~ParentSelectorOps() = default;
+
+        /// QueryTargets for this query
+        DerivedT& queryTargets(const armem::query::data::QueryTargets& targets)
+        {
+            this->_targets = targets;
+            return dynamic_cast<DerivedT&>(*this);
+        }
+
     protected:
 
         ChildT& _addChild()
         {
-            return _children.emplace_back();
+            return _children.emplace_back(_targets);
         }
         ChildT& _addChild(const ChildT& child)
         {
@@ -102,7 +120,7 @@ namespace armarx::armem::client::query::detail
 
 
         std::vector<ChildT> _children;
-
+        armem::query::data::QueryTargets _targets = {armem::query::data::QueryTarget::WM}; // if not specified we only query the WM
     };
 
 
@@ -114,17 +132,27 @@ namespace armarx::armem::client::query::detail
     {
     public:
 
-        virtual ~InnerSelectorOps()
+        InnerSelectorOps(const armem::query::data::QueryTargets& p) :
+            ChildSelectorOps<DerivedT, QueryT>(p)
         {}
 
-
         virtual std::vector<QueryT> buildQueries() const
         {
+            // check own query targets and parent query targets
+            for (const auto& target : this->_targets)
+            {
+                if (std::find(this->_parentTargets.begin(), this->_parentTargets.end(), target) == this->_parentTargets.end())
+                {
+                    // TODO: Error, this makes no sense! or just ignore?
+                }
+            }
+
             std::vector<typename ChildT::QueryT> childQueries;
             for (const auto& child : this->_children)
             {
-                for (const auto& query : child.buildQueries())
+                for (auto& query : child.buildQueries())
                 {
+                    query->targets = this->_targets;
                     childQueries.push_back(query);
                 }
             }
diff --git a/source/RobotAPI/libraries/armem/client/query/selectors.cpp b/source/RobotAPI/libraries/armem/client/query/selectors.cpp
index cc3a73829ab7c79eabc96c30b55c4ca350ac33ad..98e79d06ab3642b25bee40e89daf728ab3dfee2b 100644
--- a/source/RobotAPI/libraries/armem/client/query/selectors.cpp
+++ b/source/RobotAPI/libraries/armem/client/query/selectors.cpp
@@ -77,7 +77,6 @@ namespace armarx::armem::client::query
         return *this;
     }
 
-
     SnapshotSelector& EntitySelector::snapshots()
     {
         return _addChild();
@@ -115,7 +114,6 @@ namespace armarx::armem::client::query
     }
 
 
-
     EntitySelector& ProviderSegmentSelector::entities()
     {
         return _addChild();
@@ -153,7 +151,6 @@ namespace armarx::armem::client::query
     }
 
 
-
     ProviderSegmentSelector& CoreSegmentSelector::providerSegments()
     {
         return _addChild();
diff --git a/source/RobotAPI/libraries/armem/client/query/selectors.h b/source/RobotAPI/libraries/armem/client/query/selectors.h
index df642ded9a70ea2688eaca5865f730e8e99ee6de..b9c257dc6dd5ae1ec07fd7850322d8babef829e4 100644
--- a/source/RobotAPI/libraries/armem/client/query/selectors.h
+++ b/source/RobotAPI/libraries/armem/client/query/selectors.h
@@ -15,6 +15,10 @@ namespace armarx::armem::client::query
     {
     public:
 
+        SnapshotSelector(const armem::query::data::QueryTargets& p) :
+            detail::ChildSelectorOps<SnapshotSelector, armem::query::data::EntityQueryPtr>(p)
+        {}
+
         armem::query::data::EntityQuerySeq buildQueries() const;
 
 
@@ -44,6 +48,10 @@ namespace armarx::armem::client::query
     {
     public:
 
+        EntitySelector(const armem::query::data::QueryTargets& p) :
+            detail::InnerSelectorOps<EntitySelector, armem::query::data::ProviderSegmentQueryPtr, SnapshotSelector>(p)
+        {}
+
         /// Start specifying entity snapshots.
         SnapshotSelector& snapshots();
         SnapshotSelector& snapshots(const SnapshotSelector& selector);
@@ -79,6 +87,10 @@ namespace armarx::armem::client::query
     {
     public:
 
+        ProviderSegmentSelector(const armem::query::data::QueryTargets& p) :
+            detail::InnerSelectorOps<ProviderSegmentSelector, armem::query::data::CoreSegmentQueryPtr, EntitySelector>(p)
+        {}
+
         /// Start specifying entities.
         EntitySelector& entities();
         EntitySelector& entities(const EntitySelector& selector);
@@ -114,6 +126,10 @@ namespace armarx::armem::client::query
     {
     public:
 
+        CoreSegmentSelector(const armem::query::data::QueryTargets& p) :
+            detail::InnerSelectorOps<CoreSegmentSelector, armem::query::data::MemoryQueryPtr, ProviderSegmentSelector>(p)
+        {}
+
         /// Start specifying provider segments.
         ProviderSegmentSelector& providerSegments();
         ProviderSegmentSelector& providerSegments(const ProviderSegmentSelector& selector);
diff --git a/source/RobotAPI/libraries/armem/core/diskmemory/CoreSegment.cpp b/source/RobotAPI/libraries/armem/core/diskmemory/CoreSegment.cpp
index 6a26be9c7915a54b081e5d03b4f67cb6ae9eeaee..2dd6fd615432b9245e308ba285b4be62f99578ab 100644
--- a/source/RobotAPI/libraries/armem/core/diskmemory/CoreSegment.cpp
+++ b/source/RobotAPI/libraries/armem/core/diskmemory/CoreSegment.cpp
@@ -24,7 +24,7 @@ namespace armarx::armem::d_ltm
 
     wm::CoreSegment CoreSegment::convert() const
     {
-        wm::CoreSegment m;
+        wm::CoreSegment m(id());
         for (const auto& [_, s] : _container)
         {
             m.addProviderSegment(s.convert(_aronType));
@@ -86,7 +86,16 @@ namespace armarx::armem::d_ltm
             }
             else
             {
-                std::filesystem::create_directory(_fullPath() / k);
+                try
+                {
+                    std::filesystem::create_directory(_fullPath() / k);
+                }
+                catch (...)
+                {
+                    ARMARX_WARNING << GetHandledExceptionString();
+                    return;
+                }
+
                 auto wms = _container.emplace(std::make_pair(k, id().withProviderSegmentName(k)));
                 wms.first->second.path = path;
                 wms.first->second.append(s);
diff --git a/source/RobotAPI/libraries/armem/core/diskmemory/Entity.cpp b/source/RobotAPI/libraries/armem/core/diskmemory/Entity.cpp
index a616914ede5c279d11daea7afcfe81a681b0c460..5d784a097de4ef68ec2df0bdc1adce94fa737809 100644
--- a/source/RobotAPI/libraries/armem/core/diskmemory/Entity.cpp
+++ b/source/RobotAPI/libraries/armem/core/diskmemory/Entity.cpp
@@ -18,7 +18,7 @@ namespace armarx::armem::d_ltm
 
     wm::Entity Entity::convert(const aron::typenavigator::NavigatorPtr& expectedStructure) const
     {
-        wm::Entity m;
+        wm::Entity m(id());
         for (const auto& [_, s] : _container)
         {
             m.addSnapshot(s.convert(expectedStructure));
@@ -67,7 +67,8 @@ namespace armarx::armem::d_ltm
         {
             if (const auto& it = _container.find(k); it != _container.end())
             {
-                it->second.setTo(s);
+                // timestamp already exists
+                // We assume that a snapshot does not change, so ignore
             }
             else
             {
diff --git a/source/RobotAPI/libraries/armem/core/diskmemory/EntityInstance.cpp b/source/RobotAPI/libraries/armem/core/diskmemory/EntityInstance.cpp
index 4da151bd537f98e0e5693d948f202d68859f0d76..dd0458b83bbb8ed461ddeab50af42181fda843e4 100644
--- a/source/RobotAPI/libraries/armem/core/diskmemory/EntityInstance.cpp
+++ b/source/RobotAPI/libraries/armem/core/diskmemory/EntityInstance.cpp
@@ -41,6 +41,7 @@ namespace armarx::armem::d_ltm
     void EntityInstance::_copySelf(EntityInstance& other) const
     {
         EntityInstanceBase<EntityInstance>::_copySelf(other);
+        other.path = path;
     }
 
     std::filesystem::path EntityInstance::_fullPath() const
@@ -49,6 +50,7 @@ namespace armarx::armem::d_ltm
         {
             return _fullPath(*path);
         }
+        ARMARX_WARNING << "The path of the disk memory instance with id '" << id().str() << "' is not set. This may lead to errors.";
         return std::filesystem::path();
     }
 
@@ -59,7 +61,7 @@ namespace armarx::armem::d_ltm
 
     wm::EntityInstance EntityInstance::convert(const aron::typenavigator::NavigatorPtr& expectedStructure) const
     {
-        std::filesystem::path p = _fullPath();
+        std::filesystem::path p = _fullPath(); // here we assume that "reload" has been called first
         std::filesystem::path d = p / (std::string(DATA_FILENAME) + ".json");
 
         if (std::filesystem::is_regular_file(d))
@@ -67,7 +69,7 @@ namespace armarx::armem::d_ltm
             std::ifstream ifs(d);
             std::string file_content((std::istreambuf_iterator<char>(ifs)), (std::istreambuf_iterator<char>()));
 
-            nlohmann::json j(file_content);
+            nlohmann::json j = nlohmann::json::parse(file_content);
             auto aron = std::make_shared<aron::datanavigator::DictNavigator>();
             to_aron(aron, j, expectedStructure);
             wm::EntityInstance e(id());
@@ -76,7 +78,7 @@ namespace armarx::armem::d_ltm
         }
         else
         {
-            throw error::ArMemError("An diskMemory EntityInstance is not leading to a regular file.");
+            throw error::ArMemError("An diskMemory EntityInstance is not leading to a regular file. The path was: " + d.string());
         }
     }
 
@@ -84,7 +86,7 @@ namespace armarx::armem::d_ltm
     {
         if (!p_ptr)
         {
-            ARMARX_WARNING << "The entered is NULL.";
+            ARMARX_WARNING << "The entered path is NULL.";
         }
         std::filesystem::path p = _fullPath(*p_ptr);
         if (!std::filesystem::is_directory(p))
diff --git a/source/RobotAPI/libraries/armem/core/diskmemory/EntitySnapshot.cpp b/source/RobotAPI/libraries/armem/core/diskmemory/EntitySnapshot.cpp
index cc1124ab2335d1acf69550350a0bc980c0af7b7f..ab5b56d2274f78c350818693c269af18f0a4a979 100644
--- a/source/RobotAPI/libraries/armem/core/diskmemory/EntitySnapshot.cpp
+++ b/source/RobotAPI/libraries/armem/core/diskmemory/EntitySnapshot.cpp
@@ -26,7 +26,7 @@ namespace armarx::armem::d_ltm
 
     wm::EntitySnapshot EntitySnapshot::convert(const aron::typenavigator::NavigatorPtr& expectedStructure) const
     {
-        wm::EntitySnapshot m;
+        wm::EntitySnapshot m(id());
         for (const auto& s : _container)
         {
             m.addInstance(s.convert(expectedStructure));
@@ -56,7 +56,7 @@ namespace armarx::armem::d_ltm
                 std::filesystem::path d = p / std::to_string(i);
                 if (std::filesystem::is_directory(d))
                 {
-                    auto wms = _container.emplace_back(id().withInstanceIndex(i));
+                    auto& wms = _container.emplace_back(id().withInstanceIndex(i));
                     wms.reload(p_ptr);
                 }
                 else
@@ -79,7 +79,7 @@ namespace armarx::armem::d_ltm
             return;
         }
 
-        // We remove the contente here and reset it with new values
+        // We remove the content here and reset it with new values
         _container.clear();
 
         int i = 0;
@@ -95,7 +95,7 @@ namespace armarx::armem::d_ltm
                 continue;;
             }
 
-            auto wms = _container.emplace_back(id().withInstanceIndex(i++));
+            auto& wms = _container.emplace_back(id().withInstanceIndex(i++));
             wms.path = path;
             wms.setTo(s);
         }
diff --git a/source/RobotAPI/libraries/armem/core/diskmemory/EntitySnapshot.h b/source/RobotAPI/libraries/armem/core/diskmemory/EntitySnapshot.h
index f73702857fc6700e5cfae5f6d08b369240d08f79..545a8c0d64641c65e7faf7aa26dea77ee9865e0c 100644
--- a/source/RobotAPI/libraries/armem/core/diskmemory/EntitySnapshot.h
+++ b/source/RobotAPI/libraries/armem/core/diskmemory/EntitySnapshot.h
@@ -29,7 +29,7 @@ namespace armarx::armem::d_ltm
         void reload(const std::shared_ptr<std::filesystem::path>&);
         wm::EntitySnapshot convert(const aron::typenavigator::NavigatorPtr& expectedStructure) const;
 
-        // MongoDB connection
+        // FS connection
         void setTo(const wm::EntitySnapshot&);
 
     private:
diff --git a/source/RobotAPI/libraries/armem/core/diskmemory/Memory.cpp b/source/RobotAPI/libraries/armem/core/diskmemory/Memory.cpp
index 874d189d6a22a79c9e015d800c292f9af075cfea..4a913f2b497fce236c3cb8f9343fa97179b2d757 100644
--- a/source/RobotAPI/libraries/armem/core/diskmemory/Memory.cpp
+++ b/source/RobotAPI/libraries/armem/core/diskmemory/Memory.cpp
@@ -24,8 +24,8 @@ namespace armarx::armem::d_ltm
 
     wm::Memory Memory::convert() const
     {
-        wm::Memory m;
-        for (const auto& [_, s] : _container)
+        wm::Memory m(id());
+        for (const auto& [k, s] : _container)
         {
             m.addCoreSegment(s.convert());
         }
@@ -44,7 +44,7 @@ namespace armarx::armem::d_ltm
 
         if (!std::filesystem::exists(p))
         {
-            ARMARX_INFO << "The entered path does not exist. Assuming an empty container.";
+            ARMARX_INFO << "The entered path does not exist. Returning empty memory.";
         }
         else
         {
@@ -73,7 +73,15 @@ namespace armarx::armem::d_ltm
             }
             else
             {
-                std::filesystem::create_directory(_fullPath() / k);
+                try
+                {
+                    std::filesystem::create_directory(_fullPath() / k);
+                }
+                catch (...)
+                {
+                    ARMARX_WARNING << GetHandledExceptionString();
+                    return;
+                }
 
                 auto wms = _container.emplace(std::make_pair(k, id().withCoreSegmentName(k)));
                 wms.first->second.path = path;
diff --git a/source/RobotAPI/libraries/armem/core/diskmemory/ProviderSegment.cpp b/source/RobotAPI/libraries/armem/core/diskmemory/ProviderSegment.cpp
index 77d38171c15a0c5b6022c28c8d7ad5ece1a5b62a..f46e165381bf0d9cbdcc12b4cdfa31e286f4a545 100644
--- a/source/RobotAPI/libraries/armem/core/diskmemory/ProviderSegment.cpp
+++ b/source/RobotAPI/libraries/armem/core/diskmemory/ProviderSegment.cpp
@@ -23,7 +23,7 @@ namespace armarx::armem::d_ltm
 
     wm::ProviderSegment ProviderSegment::convert(const aron::typenavigator::NavigatorPtr& expectedStructure) const
     {
-        wm::ProviderSegment m;
+        wm::ProviderSegment m(id());
         for (const auto& [_, s] : _container)
         {
             if (hasAronType())
@@ -107,8 +107,6 @@ namespace armarx::armem::d_ltm
                 try
                 {
                     std::filesystem::create_directory(_fullPath() / k);
-                    continue;
-
                 }
                 catch (...)
                 {
diff --git a/source/RobotAPI/libraries/armem/core/longtermmemory/Entity.cpp b/source/RobotAPI/libraries/armem/core/longtermmemory/Entity.cpp
index a3c3b2e897fd1263d8cfffeea190e49f0a6da218..aeb2be76e6ae6951188af4174b9b11dc51d736fc 100644
--- a/source/RobotAPI/libraries/armem/core/longtermmemory/Entity.cpp
+++ b/source/RobotAPI/libraries/armem/core/longtermmemory/Entity.cpp
@@ -64,7 +64,7 @@ namespace armarx::armem::ltm
         {
             if (const auto& it = _container.find(k); it != _container.end())
             {
-                // segment already exists
+                // timestamp already exists
                 // We assume that a snapshot does not change, so ignore
             }
             else
diff --git a/source/RobotAPI/libraries/armem/server/MemoryToIceAdapter.cpp b/source/RobotAPI/libraries/armem/server/MemoryToIceAdapter.cpp
index ebfaa65cb2874649dc5f737998cefee3a02ff6ea..a846cffac89c6118b6c476d3531e47cd49f96f8a 100644
--- a/source/RobotAPI/libraries/armem/server/MemoryToIceAdapter.cpp
+++ b/source/RobotAPI/libraries/armem/server/MemoryToIceAdapter.cpp
@@ -29,7 +29,6 @@ namespace armarx::armem::server
     data::AddSegmentResult
     MemoryToIceAdapter::addSegment(const data::AddSegmentInput& input, bool addCoreSegments)
     {
-        ARMARX_DEBUG << "Adding segment '" << input.coreSegmentName << "/" << input.providerSegmentName << "'.";
         ARMARX_CHECK_NOT_NULL(workingMemory);
 
         data::AddSegmentResult output;
@@ -206,10 +205,10 @@ namespace armarx::armem::server
             : armem::DataMode::NoData);
 
         armem::query::data::Result result;
-        wm::Memory wm_result = wm_processor.process(input, *workingMemory, /* ignore if: */ { query::data::QueryTarget::LTM });
+        wm::Memory wm_result = wm_processor.process(input, *workingMemory, /* execute if: */ { query::data::QueryTarget::WM });
 
         armem::ltm::query_proc::MemoryQueryProcessor ltm_processor;
-        ltm::Memory ltm_result = ltm_processor.process(input, *longtermMemory, /* ignore if: */ { query::data::QueryTarget::WM });
+        ltm::Memory ltm_result = ltm_processor.process(input, *longtermMemory, /* execute if: */ { query::data::QueryTarget::LTM });
 
 
         if (ltm_result.hasData())
@@ -238,6 +237,11 @@ namespace armarx::armem::server
         }
 
         result.success = true;
+        if (result.memory->coreSegments.size() == 0)
+        {
+            ARMARX_DEBUG << "No data in memory found after query.";
+        }
+
         return result;
     }
 
@@ -262,7 +266,7 @@ namespace armarx::armem::server
         {
             // force query to only query WM
             // TODO: Think about other query class (fabian.peller)
-            query->target = query::data::QueryTarget::WM;
+            query->targets = {query::data::QueryTarget::WM};
         }
 
         armem::query::data::Result queryResult = this->query(input.query);
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/base/BaseQueryProcessorBase.h b/source/RobotAPI/libraries/armem/server/query_proc/base/BaseQueryProcessorBase.h
index 69a305e45befca5a9189c6fb264985126d16fbf3..f71aede29731259471cf5e8dd660917b3e848bb1 100644
--- a/source/RobotAPI/libraries/armem/server/query_proc/base/BaseQueryProcessorBase.h
+++ b/source/RobotAPI/libraries/armem/server/query_proc/base/BaseQueryProcessorBase.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <ArmarXCore/core/logging/Logging.h>
 #include <RobotAPI/interface/armem/query.h>
 
 
@@ -18,39 +19,67 @@ namespace armarx::armem::base::query_proc
 
     public:
 
-        DataT process(const QueryT& query, const DataT& data, const std::vector<query::data::QueryTarget>& ignoreTargets = {}) const
+        DataT process(const QueryT& query, const DataT& data, const query::data::QueryTargets& executeIf = {}) const
         {
             DataT result = data.copyEmpty();
 
-            if (std::find(ignoreTargets.begin(), ignoreTargets.end(), query.target) != ignoreTargets.end())
+            for (const auto queryTarget : query.targets)
             {
-                return result;
+                if (std::find(executeIf.begin(), executeIf.end(), queryTarget) != executeIf.end())
+                {
+                    this->process(result, query, data);
+                    break;
+                }
             }
-            this->process(result, query, data);
             return result;
         }
 
-        DataT process(const QueryPtrT& query, const DataT& data, const std::vector<query::data::QueryTarget>& ignoreTargets = {}) const
+        DataT process(const QueryPtrT& query, const DataT& data, const query::data::QueryTargets& executeIf = {}) const
         {
-            return this->process(*query, *data, ignoreTargets);
+            return this->process(*query, *data, executeIf);
         }
 
-        DataT process(const QuerySeqT& queries, const DataT& data, const std::vector<query::data::QueryTarget>& ignoreTargets = {}) const
+        DataT process(const QuerySeqT& queries, const DataT& data, const query::data::QueryTargets& executeIf = {}) const
         {
             DataT result = data.copyEmpty();
-            this->process(result, queries, data, ignoreTargets);
+            this->process(result, queries, data, executeIf);
             return result;
         }
 
-        void process(DataT& result, const QuerySeqT& queries, const DataT& data, const std::vector<query::data::QueryTarget>& ignoreTargets = {}) const
+        void process(DataT& result, const QuerySeqT& queries, const DataT& data, const query::data::QueryTargets& executeIf = {}) const
         {
+            if (queries.empty())
+            {
+                ARMARX_DEBUG << "There are no queries to process.";
+                return;
+            }
+
+            if (executeIf.empty())
+            {
+                ARMARX_DEBUG << "Could not execute query. ExecuteIf s empty.";
+                return;
+            }
+
             for (const auto& query : queries)
             {
-                if (std::find(ignoreTargets.begin(), ignoreTargets.end(), query->target) != ignoreTargets.end())
+                if (query->targets.empty())
                 {
+                    ARMARX_DEBUG << "The targets of a query are empty";
                     continue;
                 }
-                this->process(result, *query, data);
+
+                for (const auto queryTarget : query->targets)
+                {
+                    if (std::find(executeIf.begin(), executeIf.end(), queryTarget) != executeIf.end())
+                    {
+                        this->process(result, *query, data);
+                        break;
+                    }
+                    else
+                    {
+                        ARMARX_DEBUG << "The query target " << queryTarget << " was not found in executeIf: " << executeIf;
+                    }
+                }
             }
         }
 
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/base/MemoryQueryProcessorBase.h b/source/RobotAPI/libraries/armem/server/query_proc/base/MemoryQueryProcessorBase.h
index 5de194d7ba2debada4ef9363005b1a7f2e927e94..cc06defc93976ea018ab8a7d3823a00d6121543d 100644
--- a/source/RobotAPI/libraries/armem/server/query_proc/base/MemoryQueryProcessorBase.h
+++ b/source/RobotAPI/libraries/armem/server/query_proc/base/MemoryQueryProcessorBase.h
@@ -34,9 +34,9 @@ namespace armarx::armem::base::query_proc
 
 
         using Base::process;
-        _MemoryT process(const armem::query::data::Input& input, const _MemoryT& memory, const std::vector<query::data::QueryTarget>& ignoreTargets = {}) const
+        _MemoryT process(const armem::query::data::Input& input, const _MemoryT& memory, const std::vector<query::data::QueryTarget>& executeIf = {}) const
         {
-            return this->process(input.memoryQueries, memory, ignoreTargets);
+            return this->process(input.memoryQueries, memory, executeIf);
         }
 
         void process(_MemoryT& result,
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/BaseQueryProcessor.cpp b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/BaseQueryProcessor.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..68821bcd95cdf2aaccf7126d4055495d39d0393d
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/BaseQueryProcessor.cpp
@@ -0,0 +1 @@
+#include "BaseQueryProcessor.h"
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/BaseQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/BaseQueryProcessor.h
new file mode 100644
index 0000000000000000000000000000000000000000..84f967795fd26d79d173a14e71498dbec7d56ee1
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/BaseQueryProcessor.h
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <RobotAPI/interface/armem/query.h>
+#include <RobotAPI/libraries/armem/core/DataMode.h>
+
+#include "../base/BaseQueryProcessorBase.h"
+
+
+namespace armarx::armem::d_ltm::query_proc
+{
+    /**
+     * @brief Base class for memory query processors.
+     */
+    template <class DataT, class QueryT>
+    class BaseQueryProcessor :
+        virtual public base::query_proc::BaseQueryProcessorBase<DataT, QueryT>
+    {
+        using Base = base::query_proc::BaseQueryProcessorBase<DataT, QueryT>;
+
+    public:
+        BaseQueryProcessor()
+        {}
+
+    protected:
+    };
+}
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/CoreSegmentQueryProcessor.cpp b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/CoreSegmentQueryProcessor.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..afbe35ad15eea0342b0b0d4df0200aaf0d32aa2a
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/CoreSegmentQueryProcessor.cpp
@@ -0,0 +1 @@
+#include "CoreSegmentQueryProcessor.h"
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/CoreSegmentQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/CoreSegmentQueryProcessor.h
new file mode 100644
index 0000000000000000000000000000000000000000..1c40f7fc64b0a2c59fdc3e54d968c6627480cbb0
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/CoreSegmentQueryProcessor.h
@@ -0,0 +1,36 @@
+#pragma once
+
+#include "BaseQueryProcessor.h"
+#include "../base/CoreSegmentQueryProcessorBase.h"
+
+#include "../../../core/diskmemory/CoreSegment.h"
+
+#include "ProviderSegmentQueryProcessor.h"
+
+
+namespace armarx::armem::d_ltm::query_proc
+{
+    /**
+     * @brief Handles memory queries.
+     */
+    class CoreSegmentQueryProcessor :
+        virtual public BaseQueryProcessor<d_ltm::CoreSegment, armem::query::data::CoreSegmentQuery>,
+        virtual public base::query_proc::CoreSegmentQueryProcessorBase<d_ltm::CoreSegment>
+    {
+        using Base = BaseQueryProcessor<d_ltm::CoreSegment, armem::query::data::CoreSegmentQuery>;
+
+    public:
+        CoreSegmentQueryProcessor() :
+            Base()
+        {}
+
+    protected:
+        virtual ProviderSegmentT providerSegmentProcessorProcess(const armem::query::data::ProviderSegmentQuerySeq& q, const ProviderSegmentT& s) const override
+        {
+            return providerSegmentProcessor.process(q, s, {armem::query::data::QueryTarget::Disk});
+        }
+
+    private:
+        ProviderSegmentQueryProcessor providerSegmentProcessor;
+    };
+}
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/EntityQueryProcessor.cpp b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/EntityQueryProcessor.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..c1c321b026b173c6552758fb9d8b9fdf722ea5a4
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/EntityQueryProcessor.cpp
@@ -0,0 +1 @@
+#include "EntityQueryProcessor.h"
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/EntityQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/EntityQueryProcessor.h
new file mode 100644
index 0000000000000000000000000000000000000000..4d1b9e14e21804f1e44f1a2fd6456da37a113c03
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/EntityQueryProcessor.h
@@ -0,0 +1,39 @@
+#pragma once
+
+#include "BaseQueryProcessor.h"
+#include "../base/EntityQueryProcessorBase.h"
+
+#include "../../../core/diskmemory/Entity.h"
+
+#include "EntityQueryProcessor.h"
+
+namespace armarx::armem::d_ltm::query_proc
+{
+    /**
+     * @brief Handles memory queries.
+     */
+    class EntityQueryProcessor :
+        virtual public BaseQueryProcessor<d_ltm::Entity, armem::query::data::EntityQuery>,
+        virtual public base::query_proc::EntityQueryProcessorBase<d_ltm::Entity>
+    {
+        using Base = BaseQueryProcessor<d_ltm::Entity, armem::query::data::EntityQuery>;
+
+    public:
+        EntityQueryProcessor() :
+            Base()
+        {}
+
+    private:
+        void addResultSnapshot(d_ltm::Entity& result, d_ltm::Entity::ContainerT::const_iterator it) const override
+        {
+            addResultSnapshot(result, it->second);
+        }
+
+        void addResultSnapshot(d_ltm::Entity& result, const d_ltm::EntitySnapshot& snapshot) const override
+        {
+            result.addSnapshot(snapshot.copy());
+        }
+
+    };
+
+}
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/MemoryQueryProcessor.cpp b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/MemoryQueryProcessor.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..69b04de6c9e623286a5bda836dddfdc8b551b64a
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/MemoryQueryProcessor.cpp
@@ -0,0 +1 @@
+#include "MemoryQueryProcessor.h"
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/MemoryQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/MemoryQueryProcessor.h
new file mode 100644
index 0000000000000000000000000000000000000000..2abdcc1ccc7c25a317edc67e36835cb4a4df2f9b
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/MemoryQueryProcessor.h
@@ -0,0 +1,35 @@
+#pragma once
+
+#include "BaseQueryProcessor.h"
+#include "../base/MemoryQueryProcessorBase.h"
+
+#include "../../../core/diskmemory/Memory.h"
+
+#include "CoreSegmentQueryProcessor.h"
+
+namespace armarx::armem::d_ltm::query_proc
+{
+    /**
+     * @brief Handles memory queries.
+     */
+    class MemoryQueryProcessor :
+        virtual public BaseQueryProcessor<d_ltm::Memory, armem::query::data::MemoryQuery>,
+        virtual public base::query_proc::MemoryQueryProcessorBase<d_ltm::Memory>
+    {
+        using Base = BaseQueryProcessor<d_ltm::Memory, armem::query::data::MemoryQuery>;
+
+    public:
+        MemoryQueryProcessor() :
+            Base()
+        {}
+
+    protected:
+        virtual CoreSegmentT coreSegmentProcessorProcess(const armem::query::data::CoreSegmentQuerySeq& q, const CoreSegmentT& s) const override
+        {
+            return coreSegmentProcessor.process(q, s, {armem::query::data::QueryTarget::Disk});
+        }
+
+    private:
+        CoreSegmentQueryProcessor coreSegmentProcessor;
+    };
+}
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/ProviderSegmentQueryProcessor.cpp b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/ProviderSegmentQueryProcessor.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..9a2a4405001f0904b74fc6afcf96813eef0879cd
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/ProviderSegmentQueryProcessor.cpp
@@ -0,0 +1 @@
+#include "ProviderSegmentQueryProcessor.h"
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/ProviderSegmentQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/ProviderSegmentQueryProcessor.h
new file mode 100644
index 0000000000000000000000000000000000000000..94c2e756875c1152f8018f70c5e0d691a5704582
--- /dev/null
+++ b/source/RobotAPI/libraries/armem/server/query_proc/diskmemory/ProviderSegmentQueryProcessor.h
@@ -0,0 +1,37 @@
+#pragma once
+
+#include "BaseQueryProcessor.h"
+#include "../base/ProviderSegmentQueryProcessorBase.h"
+
+#include "../../../core/diskmemory/ProviderSegment.h"
+
+#include "EntityQueryProcessor.h"
+
+namespace armarx::armem::d_ltm::query_proc
+{
+    /**
+     * @brief Handles memory queries.
+     */
+    class ProviderSegmentQueryProcessor :
+        virtual public BaseQueryProcessor<d_ltm::ProviderSegment, armem::query::data::ProviderSegmentQuery>,
+        virtual public base::query_proc::ProviderSegmentQueryProcessorBase<d_ltm::ProviderSegment>
+    {
+        using Base = BaseQueryProcessor<d_ltm::ProviderSegment, armem::query::data::ProviderSegmentQuery>;
+
+    public:
+        ProviderSegmentQueryProcessor() :
+            Base()
+        {}
+
+    protected:
+        virtual EntityT entityProcessorProcess(const armem::query::data::EntityQuerySeq& q, const EntityT& s) const override
+        {
+            return entityProcessor.process(q, s, {armem::query::data::QueryTarget::Disk});
+        }
+
+    private:
+        EntityQueryProcessor entityProcessor;
+
+    };
+
+}
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/CoreSegmentQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/CoreSegmentQueryProcessor.h
index dc379f1d88fa82bbe886e412e0341079fa43fce9..e333dd816aedabbb8dfa7209c687caf727d9ccf9 100644
--- a/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/CoreSegmentQueryProcessor.h
+++ b/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/CoreSegmentQueryProcessor.h
@@ -27,7 +27,7 @@ namespace armarx::armem::ltm::query_proc
     protected:
         virtual ProviderSegmentT providerSegmentProcessorProcess(const armem::query::data::ProviderSegmentQuerySeq& q, const ProviderSegmentT& s) const override
         {
-            return providerSegmentProcessor.process(q, s);
+            return providerSegmentProcessor.process(q, s, {armem::query::data::QueryTarget::LTM});
         }
 
     private:
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/EntityQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/EntityQueryProcessor.h
index 952d759c8552c7939f6e08266e7feb880a85438e..5ec4c5dde481e16f0af30589d57ff2a447d81221 100644
--- a/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/EntityQueryProcessor.h
+++ b/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/EntityQueryProcessor.h
@@ -31,7 +31,6 @@ namespace armarx::armem::ltm::query_proc
 
         void addResultSnapshot(ltm::Entity& result, const ltm::EntitySnapshot& snapshot) const override
         {
-            ARMARX_INFO << "addResultSnapshot" << __LINE__;
             result.addSnapshot(snapshot.copy());
         }
 
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/MemoryQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/MemoryQueryProcessor.h
index a5129417262515975efa247398602272865ee5ec..569014d6579eeb6c99996e4be5b7cb68f65457b1 100644
--- a/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/MemoryQueryProcessor.h
+++ b/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/MemoryQueryProcessor.h
@@ -26,7 +26,7 @@ namespace armarx::armem::ltm::query_proc
     protected:
         virtual CoreSegmentT coreSegmentProcessorProcess(const armem::query::data::CoreSegmentQuerySeq& q, const CoreSegmentT& s) const override
         {
-            return coreSegmentProcessor.process(q, s);
+            return coreSegmentProcessor.process(q, s, {armem::query::data::QueryTarget::LTM});
         }
 
     private:
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/ProviderSegmentQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/ProviderSegmentQueryProcessor.h
index e0c6db9e3ef06e6241e9af8c572bb7fc78eec452..5443acfd6594b98250711cf2acfd434a98414066 100644
--- a/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/ProviderSegmentQueryProcessor.h
+++ b/source/RobotAPI/libraries/armem/server/query_proc/longtermmemory/ProviderSegmentQueryProcessor.h
@@ -26,7 +26,7 @@ namespace armarx::armem::ltm::query_proc
     protected:
         virtual EntityT entityProcessorProcess(const armem::query::data::EntityQuerySeq& q, const EntityT& s) const override
         {
-            return entityProcessor.process(q, s);
+            return entityProcessor.process(q, s, {armem::query::data::QueryTarget::LTM});
         }
 
     private:
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/CoreSegmentQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/CoreSegmentQueryProcessor.h
index 079f63ac59928f2bd4ace9ab7ab033bef93c04a1..390ab66f656ece6010457f12f09917d9fca413f6 100644
--- a/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/CoreSegmentQueryProcessor.h
+++ b/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/CoreSegmentQueryProcessor.h
@@ -31,7 +31,7 @@ namespace armarx::armem::wm::query_proc
     protected:
         virtual ProviderSegmentT providerSegmentProcessorProcess(const armem::query::data::ProviderSegmentQuerySeq& q, const ProviderSegmentT& s) const override
         {
-            return providerSegmentProcessor.process(q, s);
+            return providerSegmentProcessor.process(q, s, {armem::query::data::QueryTarget::WM});
         }
 
     private:
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/MemoryQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/MemoryQueryProcessor.h
index b0616c658a7915568fd910a8f35c9d4701aa1d0b..8284df202bbcf602e2433639fe85388ca13d75ff 100644
--- a/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/MemoryQueryProcessor.h
+++ b/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/MemoryQueryProcessor.h
@@ -24,7 +24,7 @@ namespace armarx::armem::wm::query_proc
     protected:
         virtual CoreSegmentT coreSegmentProcessorProcess(const armem::query::data::CoreSegmentQuerySeq& q, const CoreSegmentT& s) const override
         {
-            return coreSegmentProcessor.process(q, s);
+            return coreSegmentProcessor.process(q, s, {armem::query::data::QueryTarget::WM});
         }
 
 
diff --git a/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/ProviderSegmentQueryProcessor.h b/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/ProviderSegmentQueryProcessor.h
index 1b2e9ba97850ed1f62f2d761a51996f3b2bb2665..468138d9e2bbd526db3632019beca6a5a29f8269 100644
--- a/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/ProviderSegmentQueryProcessor.h
+++ b/source/RobotAPI/libraries/armem/server/query_proc/workingmemory/ProviderSegmentQueryProcessor.h
@@ -30,7 +30,7 @@ namespace armarx::armem::wm::query_proc
     protected:
         virtual EntityT entityProcessorProcess(const armem::query::data::EntityQuerySeq& q, const EntityT& s) const override
         {
-            return entityProcessor.process(q, s);
+            return entityProcessor.process(q, s, {armem::query::data::QueryTarget::WM});
         }
 
     private:
diff --git a/source/RobotAPI/libraries/armem/test/ArMemQueryTest.cpp b/source/RobotAPI/libraries/armem/test/ArMemQueryTest.cpp
index b2d07571d619531f45381d1238ca8201b8e0175e..4b83fd43261e1d97da45495f5da94279931e606f 100644
--- a/source/RobotAPI/libraries/armem/test/ArMemQueryTest.cpp
+++ b/source/RobotAPI/libraries/armem/test/ArMemQueryTest.cpp
@@ -134,7 +134,7 @@ BOOST_AUTO_TEST_CASE(test_entity_Single_latest)
 
 BOOST_AUTO_TEST_CASE(test_entity_Single_existing)
 {
-    addResults(query::entity::Single { query::QueryTarget::WMAndLTM, 3000 });
+    addResults(query::entity::Single({query::QueryTarget::WM, query::QueryTarget::LTM}, 3000));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -148,7 +148,7 @@ BOOST_AUTO_TEST_CASE(test_entity_Single_existing)
 
 BOOST_AUTO_TEST_CASE(test_entity_Single_non_existing)
 {
-    addResults(query::entity::Single { query::QueryTarget::WMAndLTM, 3500 });
+    addResults(query::entity::Single({query::QueryTarget::WM, query::QueryTarget::LTM}, 3500));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -182,7 +182,7 @@ BOOST_AUTO_TEST_CASE(test_entity_All)
 
 BOOST_AUTO_TEST_CASE(test_entity_TimeRange_slice)
 {
-    addResults(query::entity::TimeRange{ query::QueryTarget::WMAndLTM, 1500, 3500 });
+    addResults(query::entity::TimeRange({query::QueryTarget::WM, query::QueryTarget::LTM}, 1500, 3500));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -203,7 +203,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeRange_slice)
 
 BOOST_AUTO_TEST_CASE(test_entity_TimeRange_exact)
 {
-    addResults(query::entity::TimeRange{ query::QueryTarget::WMAndLTM, 2000, 4000 });
+    addResults(query::entity::TimeRange({query::QueryTarget::WM, query::QueryTarget::LTM}, 2000, 4000));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -223,8 +223,8 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeRange_exact)
 
 BOOST_AUTO_TEST_CASE(test_entity_TimeRange_all)
 {
-    addResults(query::entity::TimeRange{ query::QueryTarget::WMAndLTM, 0, 10000 });
-    addResults(query::entity::TimeRange{ query::QueryTarget::WMAndLTM, -1, -1 });
+    addResults(query::entity::TimeRange({query::QueryTarget::WM, query::QueryTarget::LTM}, 0, 10000));
+    addResults(query::entity::TimeRange({query::QueryTarget::WM, query::QueryTarget::LTM}, -1, -1));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -242,8 +242,8 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeRange_all)
 
 BOOST_AUTO_TEST_CASE(test_entity_TimeRange_empty)
 {
-    addResults(query::entity::TimeRange{ query::QueryTarget::WMAndLTM, 2400, 2600 });
-    addResults(query::entity::TimeRange{ query::QueryTarget::WMAndLTM, 6000, 1000 });
+    addResults(query::entity::TimeRange({query::QueryTarget::WM, query::QueryTarget::LTM}, 2400, 2600));
+    addResults(query::entity::TimeRange({query::QueryTarget::WM, query::QueryTarget::LTM}, 6000, 1000));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -257,7 +257,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeRange_empty)
 
 BOOST_AUTO_TEST_CASE(test_entity_TimeRange_from_start)
 {
-    addResults(query::entity::TimeRange{ query::QueryTarget::WMAndLTM, -1, 2500 });
+    addResults(query::entity::TimeRange({query::QueryTarget::WM, query::QueryTarget::LTM}, -1, 2500));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -278,7 +278,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeRange_from_start)
 
 BOOST_AUTO_TEST_CASE(test_entity_TimeRange_to_end)
 {
-    addResults(query::entity::TimeRange{ query::QueryTarget::WMAndLTM, 2500, -1 });
+    addResults(query::entity::TimeRange({query::QueryTarget::WM, query::QueryTarget::LTM}, 2500, -1));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -302,7 +302,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeRange_to_end)
 BOOST_AUTO_TEST_CASE(test_entity_BeforeTime_1)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::BeforeTime{ query::QueryTarget::WMAndLTM, 3500, 1 });
+    addResults(query::entity::BeforeTime({query::QueryTarget::WM, query::QueryTarget::LTM}, 3500, 1));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -318,7 +318,7 @@ BOOST_AUTO_TEST_CASE(test_entity_BeforeTime_1)
 BOOST_AUTO_TEST_CASE(test_entity_BeforeTime_2)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::BeforeTime{ query::QueryTarget::WMAndLTM, 3500, 2});
+    addResults(query::entity::BeforeTime({query::QueryTarget::WM, query::QueryTarget::LTM}, 3500, 2));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -343,7 +343,7 @@ BOOST_AUTO_TEST_CASE(test_entity_BeforeTime_2)
 BOOST_AUTO_TEST_CASE(test_entity_BeforeOrAtTime_before)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::BeforeOrAtTime{ query::QueryTarget::WMAndLTM, 3500 });
+    addResults(query::entity::BeforeOrAtTime({query::QueryTarget::WM, query::QueryTarget::LTM}, 3500));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -358,7 +358,7 @@ BOOST_AUTO_TEST_CASE(test_entity_BeforeOrAtTime_before)
 BOOST_AUTO_TEST_CASE(test_entity_BeforeOrAtTime_at)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::BeforeOrAtTime{ query::QueryTarget::WMAndLTM, 3000 });
+    addResults(query::entity::BeforeOrAtTime({query::QueryTarget::WM, query::QueryTarget::LTM}, 3000));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -373,7 +373,7 @@ BOOST_AUTO_TEST_CASE(test_entity_BeforeOrAtTime_at)
 BOOST_AUTO_TEST_CASE(test_entity_BeforeOrAtTime_lookup_past)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::BeforeOrAtTime{ query::QueryTarget::WMAndLTM, 1 });
+    addResults(query::entity::BeforeOrAtTime({query::QueryTarget::WM, query::QueryTarget::LTM}, 1));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -393,7 +393,7 @@ BOOST_AUTO_TEST_CASE(test_entity_BeforeOrAtTime_lookup_past)
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_no_limit)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, 3500, -1});
+    addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, 3500, -1));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -419,7 +419,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_no_limit)
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_limit_600)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, 3500, 600});
+    addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, 3500, 600));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -445,7 +445,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_limit_600)
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_limit_too_small)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, 3500, 100});
+    addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, 3500, 100));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -464,7 +464,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_limit_too_small)
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_limit_only_next)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, 3700, 400});
+    addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, 3700, 400));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -489,7 +489,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_limit_only_next)
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_limit_only_previous)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, 3300, 400});
+    addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, 3300, 400));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -514,7 +514,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_limit_only_previous)
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_perfect_match)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, 3000, -1});
+    addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, 3000, -1));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -539,7 +539,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_perfect_match)
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_lookup_past)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, 1, 1});
+    addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, 1, 1));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -557,7 +557,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_lookup_past)
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_lookup_future)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, 10'000, 1});
+    addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, 10'000, 1));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -575,7 +575,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_lookup_future)
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_lookup_future_valid)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, 10'000, -1});
+    addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, 10'000, -1));
     BOOST_REQUIRE_EQUAL(results.size(), 2);
 
     for (const auto& result : results)
@@ -594,7 +594,7 @@ BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_lookup_future_valid)
 
 BOOST_AUTO_TEST_CASE(test_entity_TimeApprox_lookup_invalid_timestamp)
 {
-    BOOST_REQUIRE_THROW(addResults(query::entity::TimeApprox{ query::QueryTarget::WMAndLTM, -1, 1}), ::armarx::LocalException);
+    BOOST_REQUIRE_THROW(addResults(query::entity::TimeApprox({query::QueryTarget::WM, query::QueryTarget::LTM}, -1, 1)), ::armarx::LocalException);
 }
 
 
@@ -634,7 +634,7 @@ BOOST_AUTO_TEST_CASE(test_negative_index_semantics)
 BOOST_AUTO_TEST_CASE(test_entity_IndexRange_all_default)
 {
     addResults(query::entity::IndexRange());
-    addResults(query::entity::IndexRange(query::QueryTarget::WMAndLTM, 0, -1));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM}, 0, -1));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -654,10 +654,10 @@ BOOST_AUTO_TEST_CASE(test_entity_IndexRange_all_default)
 BOOST_AUTO_TEST_CASE(test_entity_IndexRange_slice)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  1,  3 }); // => [1, 2, 3]
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  1, -2 }); // 5 - 2 = 3
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM, -4,  3 }); // 5 - 4 = 1
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM, -4, -2 });
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  1,  3));  // => [1, 2, 3]
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  1, -2));  // 5 - 2 = 3
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM}, -4,  3));  // 5 - 4 = 1
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM}, -4, -2));
     BOOST_REQUIRE_GT(results.size(), 0);
 
     for (const armem::wm::Entity& result : results)
@@ -679,12 +679,12 @@ BOOST_AUTO_TEST_CASE(test_entity_IndexRange_slice)
 BOOST_AUTO_TEST_CASE(test_entity_IndexRange_empty_range)
 {
     BOOST_REQUIRE_EQUAL(entity.size(), 5);
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  1,  0 });
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  2,  1 });
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  5,  3 });
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  4, -3 });  // 5-3 = 2
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  3, -3 });
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  1, -5 });
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  1,  0));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  2,  1));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  5,  3));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  4, -3));   // 5-3 = 2
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  3, -3));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  1, -5));
 
     BOOST_REQUIRE_GT(results.size(), 0);
 
@@ -701,12 +701,12 @@ BOOST_AUTO_TEST_CASE(test_entity_IndexRange_empty_entity)
 {
     entity.clear();
     BOOST_REQUIRE_EQUAL(entity.size(), 0);
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  0,  0 });
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  0, 10 });
-    addResults(query::entity::IndexRange{query::QueryTarget::WMAndLTM, -10, -1 });
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  2,  5 });
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM,  3, -3 });
-    addResults(query::entity::IndexRange{ query::QueryTarget::WMAndLTM, -1, 10 });
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  0,  0));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  0, 10));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM}, -10, -1));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  2,  5));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM},  3, -3));
+    addResults(query::entity::IndexRange({query::QueryTarget::WM, query::QueryTarget::LTM}, -1, 10));
 
     BOOST_REQUIRE_GT(results.size(), 0);
 
diff --git a/source/RobotAPI/libraries/armem/util/util.h b/source/RobotAPI/libraries/armem/util/util.h
index f160efcd49b3f3ddc3ec93aa98b07e5ff80c8dc6..35fc1538b78df0b817e7ae0676be68e9675d1f0f 100644
--- a/source/RobotAPI/libraries/armem/util/util.h
+++ b/source/RobotAPI/libraries/armem/util/util.h
@@ -46,6 +46,17 @@ namespace armarx::armem
         static_assert(std::is_base_of<armarx::aron::cppserializer::AronCppClass,
                       AronClass>::value);
 
+
+        if (!item.data())
+        {
+            return std::nullopt;
+        }
+
+        if (item.data()->getDescriptor() != aron::data::Descriptor::eDict)
+        {
+            return std::nullopt;
+        }
+
         try
         {
             AronClass t;
diff --git a/source/RobotAPI/libraries/armem_gui/MemoryControlWidget.cpp b/source/RobotAPI/libraries/armem_gui/MemoryControlWidget.cpp
index c68673377563e83019640755699187ebee39a418..5016db50bf5da8dc10d0fac5b5c004b9178ddc40 100644
--- a/source/RobotAPI/libraries/armem_gui/MemoryControlWidget.cpp
+++ b/source/RobotAPI/libraries/armem_gui/MemoryControlWidget.cpp
@@ -15,26 +15,31 @@ namespace armarx::armem::gui
     {
         setSizePolicy(QSizePolicy::Policy::Minimum, QSizePolicy::Policy::Fixed);
 
-        QLayout* layout = new QHBoxLayout();
-        this->setLayout(layout);
+        auto vlayout = new QVBoxLayout();
+        auto hlayout = new QHBoxLayout();
 
         const int margin = 0;
-        layout->setContentsMargins(margin, margin, margin, margin);
+        vlayout->setContentsMargins(margin, margin, margin, margin);
 
         _lineEdit = new QLineEdit("/tmp/MemoryExport", this);
-        _exportHereButton = new QPushButton("Export here", this);
+        _lineEdit->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred);
+        _lineEdit->setMinimumWidth(400);
 
-        _storeButton = new QPushButton("Store in LTM", this);
+        _storeOnDiskButton = new QPushButton("Store current result on local Disk", this);
 
-        layout->addWidget(_lineEdit);
-        layout->addWidget(_exportHereButton);
-        layout->addWidget(_storeButton);
+        _storeInLTMButton = new QPushButton("Store current result in LTM", this);
 
+        vlayout->addWidget(_lineEdit);
+        hlayout->addWidget(_storeOnDiskButton);
+        hlayout->addWidget(_storeInLTMButton);
+        vlayout->addItem(hlayout);
+
+        this->setLayout(vlayout);
         // Private connections.
 
         // Public connections.
-        connect(_storeButton, &QPushButton::pressed, this, &This::store);
-        connect(_exportHereButton, &QPushButton::pressed, this, &This::exportHere);
+        connect(_storeInLTMButton, &QPushButton::pressed, this, &This::storeInLTM);
+        connect(_storeOnDiskButton, &QPushButton::pressed, this, &This::storeOnDisk);
     }
 
     QLineEdit* MemoryControlWidget::pathInputBox()
@@ -47,14 +52,14 @@ namespace armarx::armem::gui
         return _lineEdit->text();
     }
 
-    QPushButton* MemoryControlWidget::storeButton()
+    QPushButton* MemoryControlWidget::storeInLTMButton()
     {
-        return _storeButton;
+        return _storeInLTMButton;
     }
 
-    QPushButton* MemoryControlWidget::exportHereButton()
+    QPushButton* MemoryControlWidget::storeOnDiskButton()
     {
-        return _exportHereButton;
+        return _storeOnDiskButton;
     }
 }
 
diff --git a/source/RobotAPI/libraries/armem_gui/MemoryControlWidget.h b/source/RobotAPI/libraries/armem_gui/MemoryControlWidget.h
index 4f8acc62ac9c8918f887703d9188e76cfc9f8584..19831694acc7b9251c7d372b8381f755df1bc292 100644
--- a/source/RobotAPI/libraries/armem_gui/MemoryControlWidget.h
+++ b/source/RobotAPI/libraries/armem_gui/MemoryControlWidget.h
@@ -20,17 +20,15 @@ namespace armarx::armem::gui
         QLineEdit* pathInputBox();
         QString getEnteredPath();
 
-        QPushButton* storeButton();
-        QPushButton* loadButton();
-        QPushButton* exportHereButton();
+        QPushButton* storeInLTMButton();
+        QPushButton* storeOnDiskButton();
 
     public slots:
 
     signals:
 
-        void store();
-        void load();
-        void exportHere();
+        void storeInLTM();
+        void storeOnDisk();
 
     private slots:
 
@@ -42,9 +40,8 @@ namespace armarx::armem::gui
 
         QLineEdit* _lineEdit;
 
-        QPushButton* _storeButton;
-        QPushButton* _loadButton;
-        QPushButton* _exportHereButton;
+        QPushButton* _storeInLTMButton;
+        QPushButton* _storeOnDiskButton;
 
     };
 
diff --git a/source/RobotAPI/libraries/armem_gui/MemoryViewer.cpp b/source/RobotAPI/libraries/armem_gui/MemoryViewer.cpp
index 6d711ac1dfee696b069a0408a001f5d98a08f2cd..5037bad396c0e7a83b7704b4895a25225ae8106f 100644
--- a/source/RobotAPI/libraries/armem_gui/MemoryViewer.cpp
+++ b/source/RobotAPI/libraries/armem_gui/MemoryViewer.cpp
@@ -5,6 +5,9 @@
 
 #include <RobotAPI/libraries/armem/core/diskmemory/Memory.h>
 
+#include <RobotAPI/libraries/armem/server/query_proc/diskmemory/MemoryQueryProcessor.h>
+#include <RobotAPI/libraries/armem/server/query_proc/workingmemory/MemoryQueryProcessor.h>
+
 #include <ArmarXGui/libraries/SimpleConfigDialog/SimpleConfigDialog.h>
 
 #include <ArmarXCore/core/ManagedIceObject.h>
@@ -24,7 +27,6 @@
 
 #include <filesystem>
 
-
 namespace armarx::armem::gui
 {
     MemoryViewer::MemoryViewer(
@@ -79,8 +81,8 @@ namespace armarx::armem::gui
         // Connections
         //connect(this, &This::connected, this, &This::updateMemory);
 
-        connect(memoryControlWidget, &armem::gui::MemoryControlWidget::exportHere, this, &This::exportHere);
-        connect(memoryControlWidget, &armem::gui::MemoryControlWidget::store, this, &This::store);
+        connect(memoryControlWidget, &armem::gui::MemoryControlWidget::storeOnDisk, this, &This::storeOnDisk);
+        connect(memoryControlWidget, &armem::gui::MemoryControlWidget::storeInLTM, this, &This::storeInLTM);
 
         connect(this, &This::connected, this, &This::updateMemories);
         connect(updateWidget, &armem::gui::PeriodicUpdateWidget::update, this, &This::updateMemories);
@@ -151,17 +153,18 @@ namespace armarx::armem::gui
             statusLabel->setText(QString::fromStdString(ss.str()));
             return nullptr;
         }
-        else if (not it->second.has_value())
+        /*else if (not it->second.has_value())
         {
             return nullptr;
-        }
+        }*/
         else
         {
-            return &it->second.value();
+            //return &it->second.value();
+            return &it->second;
         }
     }
 
-    void MemoryViewer::store()
+    void MemoryViewer::storeInLTM()
     {
         TIMING_START(MemoryStore);
 
@@ -175,32 +178,37 @@ namespace armarx::armem::gui
         TIMING_END_STREAM(MemoryStore, ARMARX_VERBOSE);
     }
 
-    void MemoryViewer::exportHere()
+    void MemoryViewer::storeOnDisk()
     {
         TIMING_START(MemoryExport);
         QString qs = memoryControlWidget->getEnteredPath();
         std::string utf8_text = qs.toUtf8().constData();
 
-        ARMARX_IMPORTANT << "Exporting all memories at '" << utf8_text << "'.";
-
-        std::filesystem::path p(utf8_text);
-        if (std::filesystem::is_regular_file(p))
+        if (not utf8_text.empty())
         {
-            ARMARX_WARNING << "Could not export a memory at '" << utf8_text << "'. Skipping export.";
-            return;
-        }
+            ARMARX_IMPORTANT << "Exporting all memories at '" << utf8_text << "'.";
 
-        std::filesystem::create_directories(p);
-        for (auto& [name, reader] : memoryReaders)
+            std::filesystem::path p(utf8_text);
+            if (std::filesystem::is_regular_file(p))
+            {
+                ARMARX_WARNING << "Could not export a memory at '" << utf8_text << "'. Skipping export.";
+                return;
+            }
+
+            std::filesystem::create_directories(p);
+            for (auto& [name, reader] : memoryReaders)
+            {
+                armem::client::QueryInput input = memoryGroup->queryWidget()->queryInput();
+                armem::client::QueryResult result = reader.query(input);
+
+                armem::d_ltm::Memory dMem(name);
+                dMem.reload(p / name);
+                dMem.append(result.memory);
+            }
+        }
+        else
         {
-            armem::client::QueryInput input = memoryGroup->queryWidget()->queryInput();
-            armem::client::QueryResult result = reader.query(input);
-
-            armem::d_ltm::Memory dMem(name);
-            ARMARX_IMPORTANT << "RELOAD";
-            dMem.reload(p / name);
-            ARMARX_IMPORTANT << "APPEND";
-            dMem.append(result.memory);
+            ARMARX_WARNING << "The path is empty. Could not export the memory in nirvana.";
         }
 
         TIMING_END_STREAM(MemoryExport, ARMARX_VERBOSE);
@@ -215,18 +223,77 @@ namespace armarx::armem::gui
 
         bool dataChanged = false;
 
+        QString qs = memoryControlWidget->getEnteredPath();
+        std::string utf8_text = qs.toUtf8().constData();
+
+        std::filesystem::path p(utf8_text);
+
+        // first check if the local file system should be queried
+        if (memoryGroup->queryWidget()->alsoQueryLocalDisk())
+        {
+            if (std::filesystem::is_directory(p))
+            {
+                for (const auto& d : std::filesystem::directory_iterator(p))
+                {
+                    if (d.is_directory())
+                    {
+                        std::string k = d.path().filename();
+                        armem::d_ltm::Memory dMem(k);
+                        dMem.reload(p / k);
+
+                        armem::client::QueryInput input = memoryGroup->queryWidget()->queryInput();
+                        input.addQueryTargetToAll(armem::query::data::QueryTarget::Disk);
+
+                        armem::d_ltm::query_proc::MemoryQueryProcessor d_ltm_processor;
+                        dMem = d_ltm_processor.process(input.toIce(), dMem, /* execute if: */ { query::data::QueryTarget::Disk });
+
+                        wm::Memory converted = dMem.convert();
+                        memoryData[k] = std::move(converted);
+                        dataChanged = true;
+                    }
+                }
+            }
+            else
+            {
+                ARMARX_WARNING << "Could not import a memory from '" << utf8_text << "'. Skipping import.";
+            }
+        }
+
+        armem::client::QueryInput input = memoryGroup->queryWidget()->queryInput();
         for (auto& [name, reader] : memoryReaders)
         {
             TIMING_START(MemoryQuery);
             {
-                armem::client::QueryInput input = memoryGroup->queryWidget()->queryInput();
                 armem::client::QueryResult result = reader.query(input);
                 if (result)
                 {
-                    memoryData[name] = std::move(result.memory);
+                    if (result.memory.hasData())
+                    {
+                        if (const auto& it = memoryData.find(name); it != memoryData.end())
+                        {
+                            result.memory.append(it->second);
+
+                            // requery (e.g. to get only the last n values instead of the last n from disk and the last n from wm)
+                            armem::wm::query_proc::MemoryQueryProcessor wm_processor;
+                            result.memory = wm_processor.process(input.toIce(), result.memory, /* execute if: */ { query::data::QueryTarget::WM });
+
+                            if (!result.memory.hasData())
+                            {
+                                ARMARX_ERROR << "A memory which had data before lost data. This indicates that there is something wrong.";
+                            }
+                        }
+
+                        dataChanged = true;
+                        memoryData[name] = std::move(result.memory);
+                    }
+                    else
+                    {
+                        ARMARX_INFO << "The memory " << name << " has no data after querying.";
+                    }
                 }
                 else
                 {
+                    ARMARX_WARNING << "A query for memory '" + name + "' produced an error: " << result.errorMessage;
                     if (statusLabel)
                     {
                         statusLabel->setText(QString::fromStdString(result.errorMessage));
@@ -239,24 +306,19 @@ namespace armarx::armem::gui
             {
                 debugObserver->setDebugDatafield(Logging::tag.tagName, "Memory Query [ms]", new Variant(MemoryQuery.toMilliSecondsDouble()));
             }
-
-            if (memoryData[name])
-            {
-                dataChanged = true;
-            }
-            else
-            {
-                if (statusLabel)
-                {
-                    statusLabel->setText("No query result.");
-                }
-            }
         }
 
         if (dataChanged)
         {
             emit memoryDataChanged();
         }
+        else
+        {
+            if (statusLabel)
+            {
+                statusLabel->setText("No query result.");
+            }
+        }
     }
 
 
@@ -382,10 +444,11 @@ namespace armarx::armem::gui
         std::map<std::string, const armem::wm::Memory*> convMap;
         for (auto& [name, data] : memoryData)
         {
-            if (data.has_value())
+            /*if (data.has_value())
             {
                 convMap[name] = &data.value();
-            }
+            }*/
+            convMap[name] = &data;
         }
 
         if (convMap.empty())
diff --git a/source/RobotAPI/libraries/armem_gui/MemoryViewer.h b/source/RobotAPI/libraries/armem_gui/MemoryViewer.h
index 22455503637f55114516bf6e93c6772cd18c179e..71870bdd565b0b8a585808f5f0e9f0f43c93d315 100644
--- a/source/RobotAPI/libraries/armem_gui/MemoryViewer.h
+++ b/source/RobotAPI/libraries/armem_gui/MemoryViewer.h
@@ -71,8 +71,8 @@ namespace armarx::armem::gui
         void resolveMemoryID(const MemoryID& id);
 
         // LTMControlWidget
-        void store();
-        void exportHere();
+        void storeInLTM();
+        void storeOnDisk();
 
 
     signals:
@@ -109,7 +109,7 @@ namespace armarx::armem::gui
         armem::client::MemoryNameSystem mns;
 
         std::map<std::string, armem::client::Reader> memoryReaders;
-        std::map<std::string, std::optional<armem::wm::Memory>> memoryData;
+        std::map<std::string, armem::wm::Memory> memoryData;
 
         QLayout* updateWidgetLayout = nullptr;
         armem::gui::PeriodicUpdateWidget* updateWidget = nullptr;
diff --git a/source/RobotAPI/libraries/armem_gui/query_widgets/QueryWidget.cpp b/source/RobotAPI/libraries/armem_gui/query_widgets/QueryWidget.cpp
index ae9af3c213fbbea4d4a44852e8e02d0af15b8de9..dbb3d3fcabfa2ccf0034d1ba72027664bebe6ebc 100644
--- a/source/RobotAPI/libraries/armem_gui/query_widgets/QueryWidget.cpp
+++ b/source/RobotAPI/libraries/armem_gui/query_widgets/QueryWidget.cpp
@@ -41,14 +41,18 @@ namespace armarx::armem::gui
                : armem::DataMode::NoData;
     }
 
+    bool QueryWidget::alsoQueryLocalDisk() const
+    {
+        return _snapshotSelectorWidget->queryTargetContainsLocalDisk();
+    }
+
     armem::client::QueryInput QueryWidget::queryInput()
     {
         armem::client::query::Builder qb(dataMode());
-        qb
-        .queryTarget(_snapshotSelectorWidget->queryTarget())
-        .coreSegments().all()
-        .providerSegments().all()
-        .entities().all()
+        qb.queryTargets(_snapshotSelectorWidget->queryTargets())
+        .coreSegments().all().queryTargets(_snapshotSelectorWidget->queryTargets())
+        .providerSegments().all().queryTargets(_snapshotSelectorWidget->queryTargets())
+        .entities().all().queryTargets(_snapshotSelectorWidget->queryTargets())
         .snapshots(_snapshotSelectorWidget->selector());
 
         return qb.buildQueryInput();
diff --git a/source/RobotAPI/libraries/armem_gui/query_widgets/QueryWidget.h b/source/RobotAPI/libraries/armem_gui/query_widgets/QueryWidget.h
index 37e5fca58b80d54592d4eb6443e8e624bd0a613d..d2c3fecd6198ad2ad5c3f37077eb07f4f365dea9 100644
--- a/source/RobotAPI/libraries/armem_gui/query_widgets/QueryWidget.h
+++ b/source/RobotAPI/libraries/armem_gui/query_widgets/QueryWidget.h
@@ -21,6 +21,7 @@ namespace armarx::armem::gui
 
         armem::DataMode dataMode() const;
 
+        bool alsoQueryLocalDisk() const;
         armem::client::QueryInput queryInput();
 
 
diff --git a/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotForm.cpp b/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotForm.cpp
index 8d60c2252d4e9d6593a228cad75075cc41a21e5c..1d6c0cff39fd69da5e7f29844c64fabc1843f9a4 100644
--- a/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotForm.cpp
+++ b/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotForm.cpp
@@ -20,9 +20,9 @@
 namespace armarx::armem::gui
 {
 
-    client::query::SnapshotSelector SnapshotForm::makeEntitySelector()
+    client::query::SnapshotSelector SnapshotForm::makeEntitySelector(const armem::query::data::QueryTargets& targets)
     {
-        client::query::SnapshotSelector s;
+        client::query::SnapshotSelector s(targets);
         fillEntitySelector(s);
         return s;
     }
diff --git a/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotForm.h b/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotForm.h
index 0ca9950b33a0585c97a8157bf17ad3c272fc8abc..f2f9ba1940d268d06f3383374d01893ea2d3dea4 100644
--- a/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotForm.h
+++ b/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotForm.h
@@ -19,7 +19,7 @@ namespace armarx::armem::gui
         Q_OBJECT
 
     public:
-        virtual client::query::SnapshotSelector makeEntitySelector();
+        virtual client::query::SnapshotSelector makeEntitySelector(const armem::query::data::QueryTargets& targets);
 
 
     signals:
@@ -30,10 +30,6 @@ namespace armarx::armem::gui
         virtual void fillEntitySelector(client::query::SnapshotSelector& selector) = 0;
         void setDateTimeDisplayFormat(QDateTimeEdit* dt);
 
-
-    public:
-        client::query::SnapshotSelector selector;
-
     };
 
 
diff --git a/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotSelectorWidget.cpp b/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotSelectorWidget.cpp
index 87d94376e673492d07a7fe2f0206359259ea327a..e41bed15cecbc599c7c97b4266a04e0e9a70e47e 100644
--- a/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotSelectorWidget.cpp
+++ b/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotSelectorWidget.cpp
@@ -10,25 +10,39 @@
 
 namespace armarx::armem::gui
 {
-    client::query::SnapshotSelector& SnapshotSelectorWidget::selector()
+    client::query::SnapshotSelector SnapshotSelectorWidget::selector()
     {
-        return _selector;
+        return _queryForms.at(_queryComboBox->currentText())->makeEntitySelector(queryTargets());
     }
 
-    query::data::QueryTarget SnapshotSelectorWidget::queryTarget() const
+    query::data::QueryTargets SnapshotSelectorWidget::queryTargets() const
     {
-        return _queryTarget;
+        query::data::QueryTargets targets;
+        if (_WMQueryTargetCheckBox->isChecked())
+        {
+            targets.push_back(query::data::QueryTarget::WM);
+        }
+        if (_LTMQueryTargetCheckBox->isChecked())
+        {
+            targets.push_back(query::data::QueryTarget::LTM);
+        }
+        if (_DiskMemoryQueryTargetCheckBox->isChecked())
+        {
+            targets.push_back(query::data::QueryTarget::Disk);
+        }
+        return targets;
     }
 
+    bool SnapshotSelectorWidget::queryTargetContainsLocalDisk() const
+    {
+        return _LocalDiskMemoryQueryTargetCheckBox->isChecked();
+    }
 
     SnapshotSelectorWidget::SnapshotSelectorWidget()
     {
         _pageLayout = new QVBoxLayout();
         setLayout(_pageLayout);
 
-        connect(this, &This::queryOutdated, this, &This::updateSelector);
-        connect(this, &This::queryTargetOutdated, this, &This::updateQueryTarget);
-
         {
             QHBoxLayout* typeLayout = new QHBoxLayout();
 
@@ -40,16 +54,23 @@ namespace armarx::armem::gui
             typeLayout->addWidget(_queryComboBox);
 
             connect(_queryComboBox, &QComboBox::currentTextChanged, this, &This::showSelectedFormForQuery);
-            connect(_queryComboBox, &QComboBox::currentTextChanged, this, &This::queryOutdated);
+            connect(_queryComboBox, &QComboBox::currentTextChanged, this, &This::queryChanged);
 
             // query type select box
-            _queryTargetComboBox = new QComboBox();
-            _queryTargetComboBox->addItems({"WM", "WM & LTM", "LTM (debug only)"});
-            _queryTargetComboBox->setCurrentIndex(0);
+            auto queryTargetLayout = new QHBoxLayout();
+            _WMQueryTargetCheckBox = new QCheckBox("WM");
+            _LTMQueryTargetCheckBox = new QCheckBox("LTM (MongoDB)");
+            _DiskMemoryQueryTargetCheckBox = new QCheckBox("LTM (Disk)");
+            _LocalDiskMemoryQueryTargetCheckBox = new QCheckBox("Local Disk");
 
-            typeLayout->addWidget(_queryTargetComboBox);
+            queryTargetLayout->addWidget(_WMQueryTargetCheckBox);
+            queryTargetLayout->addWidget(_LTMQueryTargetCheckBox);
+            queryTargetLayout->addWidget(_DiskMemoryQueryTargetCheckBox);
+            queryTargetLayout->addWidget(_LocalDiskMemoryQueryTargetCheckBox);
 
-            connect(_queryTargetComboBox, &QComboBox::currentTextChanged, this, &This::queryTargetOutdated);
+            _WMQueryTargetCheckBox->setChecked(true);
+
+            typeLayout->addLayout(queryTargetLayout);
 
             _pageLayout->addLayout(typeLayout);
         }
@@ -61,26 +82,7 @@ namespace armarx::armem::gui
         addForm("Time Range", new SnapshotFormTimeRange());
         addForm("Index Range", new SnapshotFormIndexRange());
 
-        // Add query targets
-        _queryTargets.insert({"WM", query::data::QueryTarget::WM});
-        _queryTargets.insert({"WM & LTM", query::data::QueryTarget::WMAndLTM});
-        _queryTargets.insert({"LTM (debug only)", query::data::QueryTarget::LTM});
-
         showSelectedFormForQuery(_queryComboBox->currentText());
-        updateSelector();
-        updateQueryTarget();
-    }
-
-    void SnapshotSelectorWidget::updateSelector()
-    {
-        this->_selector = _queryForms.at(_queryComboBox->currentText())->makeEntitySelector();
-        emit queryChanged();
-    }
-
-    void SnapshotSelectorWidget::updateQueryTarget()
-    {
-        this->_queryTarget = _queryTargets.at(_queryTargetComboBox->currentText());
-        emit queryTargetChanged();
     }
 
     void SnapshotSelectorWidget::showSelectedFormForQuery(QString selected)
@@ -95,7 +97,7 @@ namespace armarx::armem::gui
     {
         auto r = _queryForms.emplace(key, form);
         _pageLayout->addWidget(r.first->second);
-        connect(r.first->second, &SnapshotForm::queryChanged, this, &This::updateSelector);
+        //connect(r.first->second, &SnapshotForm::queryChanged, this, &This::updateSelector);
     }
 
     void SnapshotSelectorWidget::hideAllForms()
diff --git a/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotSelectorWidget.h b/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotSelectorWidget.h
index 92db5fbb13c74b011ca0f36a64fbf82a58536717..6f6422c3cdbc7fd0e1899bce47efbaaa32589062 100644
--- a/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotSelectorWidget.h
+++ b/source/RobotAPI/libraries/armem_gui/query_widgets/SnapshotSelectorWidget.h
@@ -35,31 +35,27 @@ namespace armarx::armem::gui
 
 
         armem::DataMode dataMode() const;
-        client::query::SnapshotSelector& selector();
-        query::data::QueryTarget queryTarget() const;
+        client::query::SnapshotSelector selector();
+        query::data::QueryTargets queryTargets() const;
+        bool queryTargetContainsLocalDisk() const;
 
 
     public slots:
 
     signals:
-
         void queryChanged();
-        void queryTargetChanged();
 
 
     private slots:
 
-        void updateSelector();
-        void updateQueryTarget();
+        //void updateSelector();
 
         void hideAllForms();
         void showSelectedFormForQuery(QString selected);
 
 
     signals:
-
         void queryOutdated();
-        void queryTargetOutdated();
 
 
     private:
@@ -68,16 +64,14 @@ namespace armarx::armem::gui
 
 
     public:
-
-        client::query::SnapshotSelector _selector;
-        query::data::QueryTarget _queryTarget;
-
         QVBoxLayout* _pageLayout;
         QComboBox* _queryComboBox;
-        QComboBox* _queryTargetComboBox;
+        QCheckBox* _WMQueryTargetCheckBox;
+        QCheckBox* _LTMQueryTargetCheckBox;
+        QCheckBox* _DiskMemoryQueryTargetCheckBox;
+        QCheckBox* _LocalDiskMemoryQueryTargetCheckBox;
         /// The forms for the different query types. Hidden when not selected.
         std::map<QString, SnapshotForm*> _queryForms;
-        std::map<QString, query::data::QueryTarget> _queryTargets;
 
     };
 
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/GenerateIntEnumInfo.h b/source/RobotAPI/libraries/aron/core/codegenerator/GenerateIntEnumInfo.h
index 832c3e47d08766a565ddb4dc297239da472d1d9a..e382b24225fc051ce7f8b402d73a640ec783b5ab 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/GenerateIntEnumInfo.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/GenerateIntEnumInfo.h
@@ -40,6 +40,9 @@ namespace armarx::aron::codegeneratorhelper
     public:
         std::string typeName;
         std::string definedIn;
+        std::string doc_brief;
+        std::string doc_author;
+        std::map<std::string, std::string> doc_values;
         typenavigator::IntEnumNavigatorPtr correspondingType;
     };
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/GenerateTypeInfo.h b/source/RobotAPI/libraries/aron/core/codegenerator/GenerateTypeInfo.h
index a029bca09d634f3565e89e7ef7d39eaee3af1201..c168b059222c9cbe3811b4c7bf4454647138b89f 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/GenerateTypeInfo.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/GenerateTypeInfo.h
@@ -41,7 +41,11 @@ namespace armarx::aron::codegeneratorhelper
     public:
         std::string typeName;
         std::string definedIn;
+        std::string doc_brief;
+        std::string doc_author;
+        std::map<std::string, std::string> doc_members;
         typenavigator::ObjectNavigatorPtr correspondingType;
+
         std::map<std::string, GenerateObjectInfoPtr> nestedObjects;
         std::map<std::string, GenerateIntEnumInfoPtr> nestedIntEnums;
     };
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/AronCppClass.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/AronCppClass.h
index 7249a77170fd0f5c5e930d3d41ae465502ad3e96..790bb1e62538da3cdd0c25908118514f9be3cddd 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/AronCppClass.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/AronCppClass.h
@@ -55,9 +55,9 @@ namespace armarx::aron::cppserializer
         virtual void resetSoft() = 0;
 
         /// Set members according to loaded data in ReaderInterface. If skip_first_readStartDict is true, we skip the first call of r.readStartDict() (It was already called outside. This is important for nested classes)
-        virtual void read(armarx::aron::dataIO::ReaderInterface& r, bool skip_first_readStartDict) = 0;
+        virtual void read(armarx::aron::dataIO::ReaderInterface& r, bool __aronIsMember) = 0;
 
         /// Set the data in WriterInterface to the values of this class. If a maybe type is null or false, this method calls w.writeNull().
-        virtual void write(armarx::aron::dataIO::WriterInterface& w) const = 0;
+        virtual void write(armarx::aron::dataIO::WriterInterface& w, bool __aronExtends) const = 0;
     };
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/Writer.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/Writer.cpp
index 86dc2874398a8bde89ae9224e4cdb8a6f47a83c7..89815a32fedbbc338c099ff1c56b07fdbf6c27ea 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/Writer.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/Writer.cpp
@@ -101,12 +101,12 @@ namespace armarx::aron::cppserializer
             auto serializer = std::make_shared<serializer::ObjectClassSerializer>(nav);
 
             CppClassPtr c = setupBasicCppClass(serializer->getFullCppTypename());
-            setupMemberFields(c, serializer);
+            setupMemberFields(c, publicGenerateObjectType->doc_members, serializer);
 
             if (nav->getExtends() != nullptr)
             {
                 auto extendsSerializer = std::make_shared<serializer::ObjectClassSerializer>(nav->getExtends());
-                c->addInherit(extendsSerializer->getFullCppTypename());
+                c->addInherit("public " + extendsSerializer->getFullCppTypename());
             }
             else
             {
@@ -115,9 +115,15 @@ namespace armarx::aron::cppserializer
             }
 
             // Add includes and guard
-            c->addClassDoc("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n"
-                           "!!!!!!AUTOGENERATED CLASS. Please do NOT edit. Instead, edit the corresponding .xml file!!!!!!\n"
-                           "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+            std::string classDoc = "******************************************\n"
+                                   "* AUTOGENERATED CLASS. Please do NOT edit.\n"
+                                   "******************************************\n";
+            if (!publicGenerateObjectType->doc_author.empty() or !publicGenerateObjectType->doc_brief.empty())
+            {
+                classDoc += (publicGenerateObjectType->doc_brief.empty() ? "" : " * @brief " + publicGenerateObjectType->doc_brief + "\n");
+                classDoc += (publicGenerateObjectType->doc_author.empty() ? "" : " * @author " + publicGenerateObjectType->doc_author + "\n");
+            }
+            c->addClassDoc(classDoc);
             c->setPragmaOnceIncludeGuard(true);
             c->addInclude("<memory>");
             c->addInclude("<string>");
@@ -219,12 +225,20 @@ namespace armarx::aron::cppserializer
             auto serializer = std::make_shared<serializer::IntEnumClassSerializer>(nav);
 
             CppClassPtr c = setupBasicCppClass(serializer->getFullCppTypename());
-            setupMemberFields(c, serializer);
+            setupMemberFields(c, publicGenerateIntEnumType->doc_values, serializer);
 
             // Add includes and guard
-            c->addClassDoc("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n"
-                           "!!!!!!AUTOGENERATED CLASS. Please do NOT edit. Instead, edit the corresponding .xml file!!!!!!\n"
-                           "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+            std::string classDoc = "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n"
+                                   "!!!!!!AUTOGENERATED CLASS. Please do NOT edit. Instead, edit the corresponding .xml file!!!!!!\n"
+                                   "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!";
+            if (!publicGenerateIntEnumType->doc_author.empty() or !publicGenerateIntEnumType->doc_brief.empty())
+            {
+                classDoc += "\n/**\n";
+                classDoc += (publicGenerateIntEnumType->doc_brief.empty() ? "" : " * @brief " + publicGenerateIntEnumType->doc_brief + "\n");
+                classDoc += (publicGenerateIntEnumType->doc_author.empty() ? "" : " * @author " + publicGenerateIntEnumType->doc_author + "\n");
+                classDoc += " */";
+            }
+            c->addClassDoc(classDoc);
             c->setPragmaOnceIncludeGuard(true);
             c->addInclude("<memory>");
             c->addInclude("<string>");
@@ -301,17 +315,27 @@ namespace armarx::aron::cppserializer
             auto serializer = std::make_shared<serializer::ObjectClassSerializer>(nav);
 
             CppClassPtr c = setupBasicCppClass(serializer->getFullCppTypename());
-            setupMemberFields(c, serializer);
+            setupMemberFields(c, localGenerateObjectType->doc_members, serializer);
 
             if (nav->getExtends() != nullptr)
             {
                 auto extendsSerializer = std::make_shared<serializer::ObjectClassSerializer>(nav->getExtends());
-                c->addInherit(extendsSerializer->getFullCppTypename());
+                c->addInherit("public " + extendsSerializer->getFullCppTypename());
             }
             else
             {
-                c->addInherit("virtual public armarx::aron::cppserializer::AronCppClass");
+                c->addInherit("public armarx::aron::cppserializer::AronCppClass");
+            }
+
+            std::string classDoc = "";
+            if (!localGenerateObjectType->doc_author.empty() or !localGenerateObjectType->doc_brief.empty())
+            {
+                classDoc += "/**\n";
+                classDoc += (localGenerateObjectType->doc_brief.empty() ? "" : " * @brief " + localGenerateObjectType->doc_brief + "\n");
+                classDoc += (localGenerateObjectType->doc_author.empty() ? "" : " * @author " + localGenerateObjectType->doc_author + "\n");
+                classDoc += " */";
             }
+            c->addClassDoc(classDoc);
 
             CppMethodPtr equals = serializer->toEqualsMethod();
             c->addMethod(equals);
@@ -351,20 +375,28 @@ namespace armarx::aron::cppserializer
         return c;
     }
 
-    void Writer::setupMemberFields(CppClassPtr& c, const serializer::ObjectClassSerializerPtr& o) const
+    void Writer::setupMemberFields(CppClassPtr& c, const std::map<std::string, std::string>& doc_members, const serializer::ObjectClassSerializerPtr& o) const
     {
         auto publicFields = o->getPublicVariableDeclarations("");
         for (const auto& f : publicFields)
         {
+            if (auto it = doc_members.find(f->getName()); it != doc_members.end())
+            {
+                f->setDoc("@brief " + it->second);
+            }
             c->addPublicField(f);
         }
     }
 
-    void Writer::setupMemberFields(CppClassPtr& c, const serializer::IntEnumClassSerializerPtr& o) const
+    void Writer::setupMemberFields(CppClassPtr& c, const std::map<std::string, std::string>& doc_members, const serializer::IntEnumClassSerializerPtr& o) const
     {
         auto publicFields = o->getPublicVariableDeclarations("");
         for (const auto& f : publicFields)
         {
+            if (auto it = doc_members.find(f->getName()); it != doc_members.end())
+            {
+                f->setDoc("@brief " + it->second);
+            }
             c->addPublicField(f);
         }
     }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/Writer.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/Writer.h
index d9b27c9fe82987a78724f7d837d9d3343a4af943..0cdc4c226afe5192988f34547abfe64e8687f075 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/Writer.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/Writer.h
@@ -64,8 +64,8 @@ namespace armarx::aron::cppserializer
         void generateInnerTypeObjects(CppClassPtr& classToAdd, const std::map<std::string, codegeneratorhelper::GenerateObjectInfoPtr>& localGenerateTypes);
 
         CppClassPtr setupBasicCppClass(const std::string&) const;
-        void setupMemberFields(CppClassPtr&, const serializer::ObjectClassSerializerPtr&) const;
-        void setupMemberFields(CppClassPtr&, const serializer::IntEnumClassSerializerPtr&) const;
+        void setupMemberFields(CppClassPtr&, const std::map<std::string, std::string>& doc_members, const serializer::ObjectClassSerializerPtr&) const;
+        void setupMemberFields(CppClassPtr&, const std::map<std::string, std::string>& doc_members, const serializer::IntEnumClassSerializerPtr&) const;
 
     private:
     };
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/Serializer.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/Serializer.cpp
index 19220470403b00537971203580f336acb6105aa2..5169a4fcc46d3142ce61df9d717cc03942f62781 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/Serializer.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/Serializer.cpp
@@ -130,7 +130,7 @@ namespace armarx::aron::cppserializer
         return b;
     }
 
-    CppBlockPtr Serializer::ResolveMaybeReadBlock(const std::string& accessor, const std::string& readElement, const CppBlockPtr& block_if_data, const typenavigator::NavigatorPtr& typenavigator)
+    CppBlockPtr Serializer::ResolveMaybeReadBlock(const std::string& accessor, const std::string& readElement, const CppBlockPtr& block_if_data, const typenavigator::NavigatorPtr& typenavigator, bool enforce_return_type)
     {
         std::string escaped_accessor = EscapeAccessor(accessor);
         std::string read_start_result_accessor = escaped_accessor + READ_START_RETURN_TYPE_ACCESSOR;
@@ -148,7 +148,14 @@ namespace armarx::aron::cppserializer
 
         if (!readElement.empty())
         {
-            resolved_block->addLine("auto " + read_start_result_accessor + " = " + readElement + "; // of " + accessor);
+            if (enforce_return_type or typenavigator->getMaybe() != type::Maybe::eNone)
+            {
+                resolved_block->addLine("auto " + read_start_result_accessor + " = " + readElement + "; // of " + accessor);
+            }
+            else
+            {
+                resolved_block->addLine(readElement + "; // of " + accessor);
+            }
         }
 
         if (typenavigator->getMaybe() != type::Maybe::eNone)
@@ -443,7 +450,7 @@ namespace armarx::aron::cppserializer
         doc << "@brief writeType() - This method returns a new type from the class structure using a type writer implementation. This function is static. \n";
         doc << "@return - the result of the writer implementation";
 
-        CppMethodPtr m = CppMethodPtr(new CppMethod("static void writeType(armarx::aron::typeIO::WriterInterface& w, armarx::aron::type::Maybe __aronMaybeType = armarx::aron::type::Maybe::eNone)", doc.str()));
+        CppMethodPtr m = CppMethodPtr(new CppMethod("static void writeType(armarx::aron::typeIO::WriterInterface& w, armarx::aron::type::Maybe __aronMaybeType = armarx::aron::type::Maybe::eNone, bool __aronExtends = false)", doc.str()));
         CppBlockPtr b = this->getWriteTypeBlock("");
         m->setBlock(b);
         return m;
@@ -456,7 +463,7 @@ namespace armarx::aron::cppserializer
         doc << "@param w - The writer implementation\n";
         doc << "@return - the result of the writer implementation";
 
-        CppMethodPtr m = CppMethodPtr(new CppMethod("virtual void write(armarx::aron::dataIO::WriterInterface& w) const override", doc.str()));
+        CppMethodPtr m = CppMethodPtr(new CppMethod("virtual void write(armarx::aron::dataIO::WriterInterface& w, bool __aronExtends = false) const override", doc.str()));
         CppBlockPtr b = this->getWriteBlock("");
         m->setBlock(b);
         return m;
@@ -469,7 +476,7 @@ namespace armarx::aron::cppserializer
         doc << "@param r - The reader implementation\n";
         doc << "@return - nothing";
 
-        CppMethodPtr m = CppMethodPtr(new CppMethod("virtual void read(armarx::aron::dataIO::ReaderInterface& r, bool skip_first_readStartDict = false) override", doc.str()));
+        CppMethodPtr m = CppMethodPtr(new CppMethod("virtual void read(armarx::aron::dataIO::ReaderInterface& r, bool __aronIsMember = false) override", doc.str()));
         CppBlockPtr b = std::make_shared<CppBlock>();
         b->addLine("this->resetSoft();");
         b->appendBlock(this->getReadBlock(""));
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/Serializer.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/Serializer.h
index ce4f11e9bc22d06d9d075f69d123127d50b9c70a..e7a544b8fb8342c0b83b0c27e4ecaf35e82ba933 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/Serializer.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/Serializer.h
@@ -115,7 +115,7 @@ namespace armarx::aron::cppserializer
 
         static std::string ResolveMaybeAccessor(const std::string&, const typenavigator::NavigatorPtr&);
         static CppBlockPtr ResolveMaybeWriteBlock(const std::string&, const CppBlockPtr&, const typenavigator::NavigatorPtr&);
-        static CppBlockPtr ResolveMaybeReadBlock(const std::string&, const std::string&, const CppBlockPtr&, const typenavigator::NavigatorPtr&);
+        static CppBlockPtr ResolveMaybeReadBlock(const std::string&, const std::string&, const CppBlockPtr&, const typenavigator::NavigatorPtr&, bool enforce_return_type = false);
         static CppBlockPtr ResolveMaybeEqualsBlock(const std::string&, const std::string&, const CppBlockPtr&, const typenavigator::NavigatorPtr&);
         static CppBlockPtr ResolveMaybeResetSoftBlock(const std::string&, const CppBlockPtr&, const typenavigator::NavigatorPtr&);
         static CppBlockPtr ResolveMaybeResetHardBlock(const std::string&, const CppBlockPtr&, const typenavigator::NavigatorPtr&);
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Dict.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Dict.cpp
index 10b3470db62c07bad810b95099bfab57568674b2..f494c591c7828dbd4435a02336a03d52361620ad 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Dict.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Dict.cpp
@@ -113,7 +113,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + " == " + otherInstanceAccessor + "))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/List.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/List.cpp
index b0fb56473b5f2bb435365c45d9a5040f104bba24..8483320c75efeca4c8cf573358d04d0539fb36d4 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/List.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/List.cpp
@@ -103,7 +103,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + " == " + otherInstanceAccessor + "))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Object.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Object.cpp
index 1ffbe7db264f0e27a4b74da7c9e5533193003af1..49e06676e286dc773da88d6c12ab50062e2f1eb5 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Object.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Object.cpp
@@ -77,7 +77,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + " == " + otherInstanceAccessor + "))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Pair.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Pair.cpp
index 6f78c29962573fb4c617392fa2b48398637e5bef..c465862acc74bac36c8f9f8e1c1cbf3b341890e3 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Pair.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Pair.cpp
@@ -117,7 +117,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + " == " + otherInstanceAccessor + "))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Tuple.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Tuple.cpp
index dab5b33a01a7bb3d12817645b60688ab930e8b2b..a6b5e2080e97d0514cbb4bbda9131adb68a3a860 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Tuple.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/container/Tuple.cpp
@@ -115,7 +115,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + " == " + otherInstanceAccessor + "))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/detail/NDArraySerializerBase.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/detail/NDArraySerializerBase.h
index 67b6c0435617cc7b4fcbebfe6bcadd604850794a..f0af4cfdd143da41629057e68a1291643b079eec 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/detail/NDArraySerializerBase.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/detail/NDArraySerializerBase.h
@@ -43,5 +43,19 @@ namespace armarx::aron::cppserializer::detail
         NDArraySerializerBase(const std::string& cppName, const std::string& aronDataTypename, const std::string& aronTypeTypename, const typename TypenavigatorT::PointerType& t) :
             SerializerBase<TypenavigatorT, DerivedT>(cppName, aronDataTypename, aronTypeTypename, t)
         {}
+
+        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override
+        {
+            CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
+            block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
+            return this->ResolveMaybeResetHardBlock(accessor, block_if_data, this->typenavigator);
+        }
+
+        virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override
+        {
+            CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
+            block_if_data->addLine(accessor + " = " + this->getFullCppTypename() + "();");
+            return this->ResolveMaybeResetSoftBlock(accessor, block_if_data, this->typenavigator);
+        }
     };
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/detail/PrimitiveSerializerBase.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/detail/PrimitiveSerializerBase.h
index 171f4defb27cff9a51217805f71d76fb58ca0da5..cf84eec049e341a83318dd3544fca0684e64236a 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/detail/PrimitiveSerializerBase.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/detail/PrimitiveSerializerBase.h
@@ -79,7 +79,7 @@ namespace armarx::aron::cppserializer::detail
         {
             CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
             block_if_data->addLine("if (not (" + accessor + " == " + otherInstanceAccessor + "))");
-            block_if_data->addLine("\t return false;");
+            block_if_data->addLineAsBlock("return false;");
             return this->ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, this->typenavigator);
         }
     };
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/enum/IntEnum.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/enum/IntEnum.cpp
index e412f52b59bb3b53397439c7068338131493d60d..2ae444db3f04f48865dc7e9842d5ae521e17cd0b 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/enum/IntEnum.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/enum/IntEnum.cpp
@@ -83,7 +83,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr b = CppBlockPtr(new CppBlock());
         b->addLine("if (not (" + accessor + " == " + otherInstanceAccessor + "))");
-        b->addLine("\t return false;");
+        b->addLineAsBlock("return false;");
         return b;
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenMatrix.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenMatrix.cpp
index 790d6157d4f28a33e983d0394a09448d818c6158..c59e70d713528f0db11d4bf0d2212f3f3b53de77 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenMatrix.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenMatrix.cpp
@@ -47,20 +47,6 @@ namespace armarx::aron::cppserializer::serializer
         ARMARX_CHECK_NOT_NULL(typenavigator);
     }
 
-    CppBlockPtr EigenMatrixSerializer::getResetHardBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
-        return ResolveMaybeResetHardBlock(accessor, block_if_data, typenavigator);
-    }
-
-    CppBlockPtr EigenMatrixSerializer::getResetSoftBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullCppTypename() + "();");
-        return ResolveMaybeResetSoftBlock(accessor, block_if_data, typenavigator);
-    }
-
     CppBlockPtr EigenMatrixSerializer::getWriteTypeBlock(const std::string& accessor) const
     {
         CppBlockPtr b = CppBlockPtr(new CppBlock());
@@ -87,7 +73,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + nextEl() + "isApprox(" + ResolveMaybeAccessor(otherInstanceAccessor, typenavigator) + ")))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenMatrix.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenMatrix.h
index 9c2ecd36e588238923f539ebe364af57c3681f42..13e435bfeed1161f6a349eae2507828b6a39a31c 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenMatrix.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenMatrix.h
@@ -46,8 +46,6 @@ namespace armarx::aron::cppserializer::serializer
         EigenMatrixSerializer(const typenavigator::EigenMatrixNavigatorPtr&);
 
         // virtual implementations
-        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override;
-        virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getWriteTypeBlock(const std::string&) const override;
         virtual CppBlockPtr getWriteBlock(const std::string&) const override;
         virtual CppBlockPtr getReadBlock(const std::string&) const override;
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenQuaternion.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenQuaternion.cpp
index 8e697ab6d64c9e425310b6927842d756ff96cae3..6594fd20bc9d0915cfb95ed45a1fe821f44a58eb 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenQuaternion.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenQuaternion.cpp
@@ -42,20 +42,6 @@ namespace armarx::aron::cppserializer::serializer
         ARMARX_CHECK_NOT_NULL(typenavigator);
     }
 
-    CppBlockPtr EigenQuaternionSerializer::getResetHardBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
-        return ResolveMaybeResetHardBlock(accessor, block_if_data, typenavigator);
-    }
-
-    CppBlockPtr EigenQuaternionSerializer::getResetSoftBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullCppTypename() + "();");
-        return ResolveMaybeResetSoftBlock(accessor, block_if_data, typenavigator);
-    }
-
     CppBlockPtr EigenQuaternionSerializer::getWriteTypeBlock(const std::string& accessor) const
     {
         CppBlockPtr b = CppBlockPtr(new CppBlock());
@@ -82,7 +68,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + nextEl() + "isApprox(" + otherInstanceAccessor + ")))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenQuaternion.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenQuaternion.h
index 3d756220f32d541d7f01fbadc11d597028322e3f..9a42c8cf67b3c67f9cb5664bd69a8ae2fc8d24dd 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenQuaternion.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/EigenQuaternion.h
@@ -40,7 +40,7 @@ namespace armarx::aron::cppserializer::serializer
     typedef std::shared_ptr<EigenQuaternionSerializer> EigenQuaternionSerializerPtr;
 
     class EigenQuaternionSerializer :
-            virtual public detail::NDArraySerializerBase<typenavigator::EigenQuaternionNavigator, EigenQuaternionSerializer>
+        virtual public detail::NDArraySerializerBase<typenavigator::EigenQuaternionNavigator, EigenQuaternionSerializer>
     {
     public:
         using PointerType = EigenQuaternionSerializerPtr;
@@ -50,8 +50,6 @@ namespace armarx::aron::cppserializer::serializer
         EigenQuaternionSerializer(const typenavigator::EigenQuaternionNavigatorPtr&);
 
         // virtual implementations
-        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override;
-        virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getWriteTypeBlock(const std::string&) const override;
         virtual CppBlockPtr getWriteBlock(const std::string&) const override;
         virtual CppBlockPtr getReadBlock(const std::string&) const override;
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/IVTCByteImage.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/IVTCByteImage.cpp
index e33934d359e63943bea3a194f0a739ae5adf471b..4a986761bd57f9b7b2a2810fab8c19e5ffb43067 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/IVTCByteImage.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/IVTCByteImage.cpp
@@ -47,13 +47,6 @@ namespace armarx::aron::cppserializer::serializer
         }
     }
 
-    CppBlockPtr IVTCByteImageSerializer::getResetHardBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
-        return ResolveMaybeResetHardBlock(accessor, block_if_data, typenavigator);
-    }
-
     CppBlockPtr IVTCByteImageSerializer::getResetSoftBlock(const std::string& accessor) const
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
@@ -84,16 +77,16 @@ namespace armarx::aron::cppserializer::serializer
 
         block_if_data->addLine(accessor + nextEl() + "Set(" + read_start_result_accessor + ".dims[0], " + read_start_result_accessor + ".dims[1], static_cast<CByteImage::ImageType>(std::stoi(" + read_start_result_accessor + ".type)));");
         block_if_data->addLine("r.readEndNDArray(reinterpret_cast<unsigned char*>(" + accessor + nextEl() + "pixels)); // of " + accessor);
-        return ResolveMaybeReadBlock(accessor, "r.readStartNDArray()", block_if_data, typenavigator);
+        return ResolveMaybeReadBlock(accessor, "r.readStartNDArray()", block_if_data, typenavigator, true);
     }
 
     CppBlockPtr IVTCByteImageSerializer::getEqualsBlock(const std::string& accessor, const std::string& otherInstanceAccessor) const
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + nextEl() + "IsCompatible(" + toPointerAccessor(otherInstanceAccessor) + ")))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         block_if_data->addLine("if (not (memcmp(" + accessor + nextEl() + "pixels, " + otherInstanceAccessor + nextEl() + "pixels, " + accessor + nextEl() + "width * " + accessor + nextEl() + "height * " + accessor + nextEl() + "bytesPerPixel) == 0))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/IVTCByteImage.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/IVTCByteImage.h
index 07e61842942c67a10bdef419596ae5580c352dfd..1be69bdef6815d3c09f7d0cf16a06d2dda5cd81e 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/IVTCByteImage.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/IVTCByteImage.h
@@ -40,7 +40,7 @@ namespace armarx::aron::cppserializer::serializer
     typedef std::shared_ptr<IVTCByteImageSerializer> AronIVTCByteImageTypeCppSerializerPtr;
 
     class IVTCByteImageSerializer :
-            virtual public detail::NDArraySerializerBase<typenavigator::IVTCByteImageNavigator, IVTCByteImageSerializer>
+        virtual public detail::NDArraySerializerBase<typenavigator::IVTCByteImageNavigator, IVTCByteImageSerializer>
     {
     public:
         using PointerType = AronIVTCByteImageTypeCppSerializerPtr;
@@ -50,7 +50,6 @@ namespace armarx::aron::cppserializer::serializer
         IVTCByteImageSerializer(const typenavigator::IVTCByteImageNavigatorPtr&);
 
         // virtual implementations
-        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getWriteTypeBlock(const std::string&) const override;
         virtual CppBlockPtr getWriteBlock(const std::string&) const override;
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/NDArray.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/NDArray.cpp
index 67eb03720ef2650e14be2f0b4e0713dca4e2a010..dfd9e90c390c358aa1aba0fa6af2c3f843f6013a 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/NDArray.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/NDArray.cpp
@@ -35,20 +35,6 @@ namespace armarx::aron::cppserializer::serializer
         ARMARX_CHECK_NOT_NULL(typenavigator);
     }
 
-    CppBlockPtr NDArraySerializer::getResetHardBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
-        return ResolveMaybeResetHardBlock(accessor, block_if_data, typenavigator);
-    }
-
-    CppBlockPtr NDArraySerializer::getResetSoftBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullCppTypename() + "();");
-        return ResolveMaybeResetSoftBlock(accessor, block_if_data, typenavigator);
-    }
-
     CppBlockPtr NDArraySerializer::getWriteTypeBlock(const std::string&) const
     {
         CppBlockPtr b = CppBlockPtr(new CppBlock());
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/NDArray.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/NDArray.h
index 7785a7b0c30f6c3a34c6708f67b577d4cc27fd26..540b38d930ec9a2911c8bb058b856031cc430683 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/NDArray.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/NDArray.h
@@ -39,7 +39,7 @@ namespace armarx::aron::cppserializer::serializer
     typedef std::shared_ptr<NDArraySerializer> AronNDArrayTypeCppSerializerPtr;
 
     class NDArraySerializer :
-            virtual public detail::NDArraySerializerBase<typenavigator::NDArrayNavigator, NDArraySerializer>
+        virtual public detail::NDArraySerializerBase<typenavigator::NDArrayNavigator, NDArraySerializer>
     {
     public:
         using PointerType = AronNDArrayTypeCppSerializerPtr;
@@ -49,8 +49,6 @@ namespace armarx::aron::cppserializer::serializer
         NDArraySerializer(const typenavigator::NDArrayNavigatorPtr&);
 
         // virtual implementations
-        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override;
-        virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getWriteTypeBlock(const std::string&) const override;
         virtual CppBlockPtr getWriteBlock(const std::string&) const override;
         virtual CppBlockPtr getReadBlock(const std::string&) const override;
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/OpenCVMat.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/OpenCVMat.cpp
index da0e3c01389ef54f1d3afbd97f6767112db70a24..37de66674278dc5a8439a2b06d3e634dab7e42ba 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/OpenCVMat.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/OpenCVMat.cpp
@@ -63,13 +63,6 @@ namespace armarx::aron::cppserializer::serializer
         return {b, accessor_dimensions};
     }
 
-    CppBlockPtr OpenCVMatSerializer::getResetHardBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
-        return ResolveMaybeResetHardBlock(accessor, block_if_data, typenavigator);
-    }
-
     CppBlockPtr OpenCVMatSerializer::getResetSoftBlock(const std::string& accessor) const
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
@@ -117,14 +110,14 @@ namespace armarx::aron::cppserializer::serializer
         b2->addLine("r.readEndNDArray(reinterpret_cast<unsigned char*>(" + accessor + nextEl() + "data)); // of " + accessor);
         block_if_data->addBlock(b2);
 
-        return ResolveMaybeReadBlock(accessor, "r.readStartNDArray()", block_if_data, typenavigator);
+        return ResolveMaybeReadBlock(accessor, "r.readStartNDArray()", block_if_data, typenavigator, true);
     }
 
     CppBlockPtr OpenCVMatSerializer::getEqualsBlock(const std::string& accessor, const std::string& otherInstanceAccessor) const
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (cv::countNonZero(" + accessor + " != " + otherInstanceAccessor + ") != 0)");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/OpenCVMat.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/OpenCVMat.h
index 4ed162490b73187359eecd5546115a37c0d4b01f..27ec677b25d20dab8d2e966ac6e0065ad1db98dd 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/OpenCVMat.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/OpenCVMat.h
@@ -50,7 +50,6 @@ namespace armarx::aron::cppserializer::serializer
         OpenCVMatSerializer(const typenavigator::OpenCVMatNavigatorPtr& n);
 
         // virtual implementations
-        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getWriteTypeBlock(const std::string&) const override;
         virtual CppBlockPtr getWriteBlock(const std::string&) const override;
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Orientation.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Orientation.cpp
index c10d1adfb26b3462639d2aed861d0f2d22be2fca..c908a0c44a8b0d1d940b9a64be5e79558b1dc949 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Orientation.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Orientation.cpp
@@ -35,20 +35,6 @@ namespace armarx::aron::cppserializer::serializer
         ARMARX_CHECK_NOT_NULL(typenavigator);
     }
 
-    CppBlockPtr OrientationSerializer::getResetHardBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
-        return ResolveMaybeResetHardBlock(accessor, block_if_data, typenavigator);
-    }
-
-    CppBlockPtr OrientationSerializer::getResetSoftBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullCppTypename() + "();");
-        return ResolveMaybeResetSoftBlock(accessor, block_if_data, typenavigator);
-    }
-
     CppBlockPtr OrientationSerializer::getWriteTypeBlock(const std::string& accessor) const
     {
         CppBlockPtr b = CppBlockPtr(new CppBlock());
@@ -75,7 +61,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + nextEl() + "isApprox(" + otherInstanceAccessor + ")))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Orientation.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Orientation.h
index df2349ca6ccb488131be4524eb17a63cc16874bd..ece7bb620a16d40184518585ed0b0592a8264639 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Orientation.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Orientation.h
@@ -39,7 +39,7 @@ namespace armarx::aron::cppserializer::serializer
     typedef std::shared_ptr<OrientationSerializer> AronOrientationTypeCppSerializerPtr;
 
     class OrientationSerializer :
-            virtual public detail::NDArraySerializerBase<typenavigator::OrientationNavigator, OrientationSerializer>
+        virtual public detail::NDArraySerializerBase<typenavigator::OrientationNavigator, OrientationSerializer>
     {
     public:
         using PointerType = AronOrientationTypeCppSerializerPtr;
@@ -49,8 +49,6 @@ namespace armarx::aron::cppserializer::serializer
         OrientationSerializer(const typenavigator::OrientationNavigatorPtr&);
 
         // virtual implementations
-        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override;
-        virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getWriteTypeBlock(const std::string&) const override;
         virtual CppBlockPtr getWriteBlock(const std::string&) const override;
         virtual CppBlockPtr getReadBlock(const std::string&) const override;
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/PCLPointCloud.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/PCLPointCloud.cpp
index 8229554f6542ce0fb91509ed32837df20e076ca4..5a6155b230e3fd5267ef30dcf665ca60df97ab1f 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/PCLPointCloud.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/PCLPointCloud.cpp
@@ -48,13 +48,6 @@ namespace armarx::aron::cppserializer::serializer
         ARMARX_CHECK_NOT_NULL(typenavigator);
     }
 
-    CppBlockPtr PCLPointCloudSerializer::getResetHardBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
-        return ResolveMaybeResetHardBlock(accessor, block_if_data, typenavigator);
-    }
-
     CppBlockPtr PCLPointCloudSerializer::getResetSoftBlock(const std::string& accessor) const
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
@@ -85,16 +78,17 @@ namespace armarx::aron::cppserializer::serializer
 
         block_if_data->addLine(accessor + " = " + getCoreCppTypename() + "(" + read_start_result_accessor + ".dims[0], " + read_start_result_accessor + ".dims[1]);");
         block_if_data->addLine("r.readEndNDArray(reinterpret_cast<unsigned char*>(" + accessor + nextEl() + "points.data())); // of " + accessor);
-        return ResolveMaybeReadBlock(accessor, "r.readStartNDArray()", block_if_data, typenavigator);
+        return ResolveMaybeReadBlock(accessor, "r.readStartNDArray()", block_if_data, typenavigator, true);
     }
 
     CppBlockPtr PCLPointCloudSerializer::getEqualsBlock(const std::string& accessor, const std::string& otherInstanceAccessor) const
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (" + accessor + nextEl() + "width != " + otherInstanceAccessor + nextEl() + "width || " + accessor + nextEl() + "height != " + otherInstanceAccessor + nextEl() + "height)");
-        block_if_data->addLine("\t return false;");
-        //b->addLine("if (" + accessor + "->points != " + otherInstanceAccessor + "->points)");
-        //b->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
+
+        //block_if_data->addLine("if (" + accessor + nextEl() + "points != " + otherInstanceAccessor + nextEl() + "points)");
+        //block_if_data->addLine("\t return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/PCLPointCloud.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/PCLPointCloud.h
index 88d9b337b727e9f421a518e62ed7bc7df0f41284..3f182f4e24f775166a4e64d12f8933fffa771fc6 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/PCLPointCloud.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/PCLPointCloud.h
@@ -39,7 +39,7 @@ namespace armarx::aron::cppserializer::serializer
     typedef std::shared_ptr<PCLPointCloudSerializer> AronPCLPointCloudTypeCppSerializerPtr;
 
     class PCLPointCloudSerializer :
-            virtual public detail::NDArraySerializerBase<typenavigator::PCLPointCloudNavigator, PCLPointCloudSerializer>
+        virtual public detail::NDArraySerializerBase<typenavigator::PCLPointCloudNavigator, PCLPointCloudSerializer>
     {
     public:
         using PointerType = AronPCLPointCloudTypeCppSerializerPtr;
@@ -49,7 +49,6 @@ namespace armarx::aron::cppserializer::serializer
         PCLPointCloudSerializer(const typenavigator::PCLPointCloudNavigatorPtr&);
 
         // virtual implementations
-        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getWriteTypeBlock(const std::string&) const override;
         virtual CppBlockPtr getWriteBlock(const std::string&) const override;
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Pose.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Pose.cpp
index 93e340f51c049d3cd1d6913ea74c32b1505f1e08..eccbbca04eeeced4c106707d5963222f0250db54 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Pose.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Pose.cpp
@@ -35,20 +35,6 @@ namespace armarx::aron::cppserializer::serializer
         ARMARX_CHECK_NOT_NULL(typenavigator);
     }
 
-    CppBlockPtr PoseSerializer::getResetHardBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
-        return ResolveMaybeResetHardBlock(accessor, block_if_data, typenavigator);
-    }
-
-    CppBlockPtr PoseSerializer::getResetSoftBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullCppTypename() + "();");
-        return ResolveMaybeResetSoftBlock(accessor, block_if_data, typenavigator);
-    }
-
     CppBlockPtr PoseSerializer::getWriteTypeBlock(const std::string& accessor) const
     {
         CppBlockPtr b = CppBlockPtr(new CppBlock());
@@ -75,7 +61,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + nextEl() + "isApprox(" + otherInstanceAccessor + ")))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Pose.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Pose.h
index 46e7b82a51ff696f2f1b853a2dc4b5deb2e29acd..45b8eb78c64e62a2ea7713ac977c9fb3e675de05 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Pose.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Pose.h
@@ -39,7 +39,7 @@ namespace armarx::aron::cppserializer::serializer
     typedef std::shared_ptr<PoseSerializer> AronPoseTypeCppSerializerPtr;
 
     class PoseSerializer :
-            virtual public detail::NDArraySerializerBase<typenavigator::PoseNavigator, PoseSerializer>
+        virtual public detail::NDArraySerializerBase<typenavigator::PoseNavigator, PoseSerializer>
     {
     public:
         using PointerType = AronPoseTypeCppSerializerPtr;
@@ -49,8 +49,6 @@ namespace armarx::aron::cppserializer::serializer
         PoseSerializer(const typenavigator::PoseNavigatorPtr&);
 
         // virtual implementations
-        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override;
-        virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getWriteTypeBlock(const std::string&) const override;
         virtual CppBlockPtr getWriteBlock(const std::string&) const override;
         virtual CppBlockPtr getReadBlock(const std::string&) const override;
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Position.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Position.cpp
index b4409c2f9f226995c118deb33a8cb298462997cb..199c7e3053af9cc84016d14a320092667ce87c71 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Position.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Position.cpp
@@ -35,20 +35,6 @@ namespace armarx::aron::cppserializer::serializer
         ARMARX_CHECK_NOT_NULL(typenavigator);
     }
 
-    CppBlockPtr PositionSerializer::getResetHardBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullTypenameGenerator() + "();");
-        return ResolveMaybeResetHardBlock(accessor, block_if_data, typenavigator);
-    }
-
-    CppBlockPtr PositionSerializer::getResetSoftBlock(const std::string& accessor) const
-    {
-        CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
-        block_if_data->addLine(accessor + " = " + this->getFullCppTypename() + "();");
-        return ResolveMaybeResetSoftBlock(accessor, block_if_data, typenavigator);
-    }
-
     CppBlockPtr PositionSerializer::getWriteTypeBlock(const std::string& accessor) const
     {
         CppBlockPtr b = CppBlockPtr(new CppBlock());
@@ -75,7 +61,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (" + accessor + nextEl() + "isApprox(" + otherInstanceAccessor + ")))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Position.h b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Position.h
index 1c2f17b9028670e8aa87b79aa30a50b55941baaf..acb8f9912f8169b161ccd5b6d80c30e546b7ec75 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Position.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/ndarray/Position.h
@@ -39,7 +39,7 @@ namespace armarx::aron::cppserializer::serializer
     typedef std::shared_ptr<PositionSerializer> AronPositionTypeCppSerializerPtr;
 
     class PositionSerializer :
-            virtual public detail::NDArraySerializerBase<typenavigator::PositionNavigator, PositionSerializer>
+        virtual public detail::NDArraySerializerBase<typenavigator::PositionNavigator, PositionSerializer>
     {
     public:
         using PointerType = AronPositionTypeCppSerializerPtr;
@@ -49,8 +49,6 @@ namespace armarx::aron::cppserializer::serializer
         PositionSerializer(const typenavigator::PositionNavigatorPtr&);
 
         // virtual implementations
-        virtual CppBlockPtr getResetHardBlock(const std::string& accessor) const override;
-        virtual CppBlockPtr getResetSoftBlock(const std::string& accessor) const override;
         virtual CppBlockPtr getWriteTypeBlock(const std::string&) const override;
         virtual CppBlockPtr getWriteBlock(const std::string&) const override;
         virtual CppBlockPtr getReadBlock(const std::string&) const override;
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/toplevel/IntEnumClass.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/toplevel/IntEnumClass.cpp
index 6998d81b564e532f5f174c8c07db8b4b79b1f703..39f178fd00661fe78478ee3e74fe0872b2e762a5 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/toplevel/IntEnumClass.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/toplevel/IntEnumClass.cpp
@@ -117,7 +117,7 @@ namespace armarx::aron::cppserializer::serializer
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
         block_if_data->addLine("if (not (value == " + otherInstanceAccessor + ".value))");
-        block_if_data->addLine("\t return false;");
+        block_if_data->addLineAsBlock("return false;");
         return ResolveMaybeEqualsBlock(accessor, otherInstanceAccessor, block_if_data, typenavigator);
     }
 
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/toplevel/ObjectClass.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/toplevel/ObjectClass.cpp
index e674c2445e24fa91af875bb81fbcd76e1d6d39d6..7653acba47e178b6337f8fbc9602037070b76836 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/toplevel/ObjectClass.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/toplevel/ObjectClass.cpp
@@ -100,13 +100,15 @@ namespace armarx::aron::cppserializer::serializer
     CppBlockPtr ObjectClassSerializer::getWriteTypeBlock(const std::string&) const
     {
         CppBlockPtr b = CppBlockPtr(new CppBlock());
+        b->addLine("w.writeStartObject({\"" + typenavigator->getObjectName() + "\", __aronMaybeType}); // of top level object " + getCoreCppTypename());
+
         if (typenavigator->getExtends() != nullptr)
         {
             const auto extends_s = FromAronTypeNaviagtorPtr(typenavigator->getExtends());
-            b->addLine(extends_s->getFullCppTypename() + "::writeType(w);");
+            b->addLine(extends_s->getFullCppTypename() + "::writeType(w, armarx::aron::type::Maybe::eNone, true);");
+            b->addLine("w.writeExtends();");
         }
 
-        b->addLine("w.writeStartObject({\"" + typenavigator->getObjectName() + "\", __aronMaybeType}); // of top level object " + getCoreCppTypename());
         for (const auto& [key, child] : typenavigator->getMemberTypes())
         {
             const auto child_s = FromAronTypeNaviagtorPtr(child);
@@ -115,20 +117,25 @@ namespace armarx::aron::cppserializer::serializer
             b->appendBlock(b2);
         }
 
-        b->addLine("w.writeEndObject(); // of top level object " + getCoreCppTypename());
+        b->addLine("if (!__aronExtends)");
+        b->addLineAsBlock("w.writeEndObject(); // of top level object " + getCoreCppTypename());
+
         return b;
     }
 
     CppBlockPtr ObjectClassSerializer::getWriteBlock(const std::string& accessor) const
     {
         CppBlockPtr block_if_data = CppBlockPtr(new CppBlock());
+
+        block_if_data->addLine("if (!__aronExtends)");
+        block_if_data->addLineAsBlock("w.writeStartDict(); // of top level object " + getCoreCppTypename());
+
         if (typenavigator->getExtends() != nullptr)
         {
             const auto extends_s = FromAronTypeNaviagtorPtr(typenavigator->getExtends());
-            block_if_data->addLine(extends_s->getFullCppTypename() + "::write(w, aron_type);");
+            block_if_data->addLine(extends_s->getFullCppTypename() + "::write(w, true);");
         }
 
-        block_if_data->addLine("w.writeStartDict(); // of top level object " + getCoreCppTypename());
         for (const auto& [key, child] : typenavigator->getMemberTypes())
         {
             const auto child_s = FromAronTypeNaviagtorPtr(child);
@@ -138,7 +145,9 @@ namespace armarx::aron::cppserializer::serializer
             child_b->appendBlock(child_s->getWriteBlock(key));
             block_if_data->appendBlock(child_b);
         }
-        block_if_data->addLine("w.writeEndDict(); // of top level object " + getCoreCppTypename());
+
+        block_if_data->addLine("if (!__aronExtends)");
+        block_if_data->addLineAsBlock("w.writeEndDict(); // of top level object " + getCoreCppTypename());
         return ResolveMaybeWriteBlock(accessor, block_if_data, typenavigator);
     }
 
@@ -151,10 +160,8 @@ namespace armarx::aron::cppserializer::serializer
             block_if_data->addLine(extends_s->getFullCppTypename() + "::read(r);");
         }
 
-        block_if_data->addLine("if(!skip_first_readStartDict)");
-        auto readStartDict = std::make_shared<CppBlock>();
-        readStartDict->addLine("r.readStartDict(); // of top level object " + getCoreCppTypename());
-        block_if_data->addBlock(readStartDict);
+        block_if_data->addLine("if(!__aronIsMember)");
+        block_if_data->addLineAsBlock("r.readStartDict(); // of top level object " + getCoreCppTypename());
 
         for (const auto& [key, child] : typenavigator->getMemberTypes())
         {
@@ -173,7 +180,7 @@ namespace armarx::aron::cppserializer::serializer
         {
             const auto extends_s = FromAronTypeNaviagtorPtr(typenavigator->getExtends());
             block_if_data->addLine("if (not (" + extends_s->getFullCppTypename() + "::operator== (" + otherInstanceAccessor + ")))");
-            block_if_data->addLine("\t return false;");
+            block_if_data->addLineAsBlock("return false;");
         }
         for (const auto& [key, child] : typenavigator->getMemberTypes())
         {
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Data.h b/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Data.h
index 4950d51f77149b7f192766d79144bfdfb7fea3c6..695050d69d765585b3192e9a2874c721afe8693c 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Data.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Data.h
@@ -78,6 +78,10 @@ namespace armarx::aron::xmltypereader
         static constexpr const char* RAW_PTR_NAME = "raw_ptr";
         static constexpr const char* SHARED_PTR_NAME = "shared_ptr";
         static constexpr const char* UNIQUE_PTR_NAME = "unique_ptr";
+        static constexpr const char* PACKAGE_NAME = "package";
+        static constexpr const char* DOC_BRIEF_NAME = "doc-brief";
+        static constexpr const char* DOC_AUTHOR_NAME = "doc-author";
+        static constexpr const char* DOC_PARAM_NAME = "doc-param";
 
         // Second level tags. Only important if in specific top level tag
         static constexpr const char* OBJECT_CHILD_TAG = "objectchild";
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Reader.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Reader.cpp
index 944f755f4ffdac48ae204903c0047a39c45e828f..7a89bb039550822a81f61e4ee1716f1e9c39688a 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Reader.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Reader.cpp
@@ -53,20 +53,13 @@ namespace armarx::aron::xmltypereader
     void Reader::parseFile(const std::filesystem::path& _file)
     {
         fs::path file = _file;
-        if (!file.empty() && file.is_relative())
-        {
-            if (std::optional<fs::path> resolved = detail::resolveRelativePackagePath(file))
-            {
-                file = resolved.value();
-            }
-        }
 
         RapidXmlReaderPtr reader = RapidXmlReader::FromFile(file.string());
-        parse(reader);
+        parse(reader, _file);
     }
 
     // private method reading nodes
-    void Reader::parse(const RapidXmlReaderPtr& reader)
+    void Reader::parse(const RapidXmlReaderPtr& reader, const std::filesystem::path& filePath)
     {
         RapidXmlReaderNode root = reader->getRoot();
 
@@ -129,7 +122,7 @@ namespace armarx::aron::xmltypereader
             std::vector<RapidXmlReaderNode> includes = children[cpp_includes_index].nodes();
             for (const auto& include : includes)
             {
-                this->codeIncludes.push_back(readCodeInclude(include));
+                this->codeIncludes.push_back(readCodeInclude(include, filePath));
             }
         }
 
@@ -139,7 +132,7 @@ namespace armarx::aron::xmltypereader
             for (const auto& aronInclude : children[include_aron_file_index].nodes())
             {
                 // right now unused
-                this->aronIncludes.push_back(readAronInclude(aronInclude));
+                this->aronIncludes.push_back(readAronInclude(aronInclude, filePath));
             }
         }
 
@@ -169,7 +162,7 @@ namespace armarx::aron::xmltypereader
         }
     }
 
-    std::string Reader::readCodeInclude(const RapidXmlReaderNode& node)
+    std::string Reader::readCodeInclude(const RapidXmlReaderNode& node, const std::filesystem::path& filePath)
     {
         Data::EnforceTagName(node, Data::INCLUDE_TAG);
         Data::EnforceAttribute(node, Data::INCLUDE_ATTRIBUTE_NAME);
@@ -177,22 +170,52 @@ namespace armarx::aron::xmltypereader
         return include;
     }
 
-    std::string Reader::readAronInclude(const RapidXmlReaderNode& node)
+    std::string Reader::readAronInclude(const RapidXmlReaderNode& node, const std::filesystem::path& filePath)
     {
         Data::EnforceTagName(node, Data::INCLUDE_TAG);
-        const std::string xmlinclude = Data::GetAttribute(node, Data::INCLUDE_ATTRIBUTE_NAME);
+        std::string specifiedPath = Data::GetAttribute(node, Data::INCLUDE_ATTRIBUTE_NAME);
+        specifiedPath = simox::alg::replace_all(specifiedPath, "<", "");
+        specifiedPath = simox::alg::replace_all(specifiedPath, ">", "");
+        const std::filesystem::path xmlincludepath(specifiedPath);
+
+        // add logic to allow relative paths:
+        std::filesystem::path resolved_absolute_path(xmlincludepath);
+        std::filesystem::path resolved_relative_path(xmlincludepath);
+
+        if (!xmlincludepath.empty() && xmlincludepath.is_relative())
+        {
+            if (std::optional<fs::path> resolvedPackagePath = resolveRelativePackagePath(xmlincludepath); resolvedPackagePath.has_value())
+            {
+                // check if relative path belongs to a package
+                resolved_absolute_path = resolvedPackagePath.value();
+                resolved_relative_path = xmlincludepath;
+            }
+            else
+            {
+                // perhaps the relative path is relative from file position?
+                // TODO: FixMe
+                resolved_absolute_path = filePath.parent_path() / xmlincludepath;
+                resolved_relative_path = filePath.parent_path() / xmlincludepath;
+
+                if (!fs::is_regular_file(resolved_absolute_path))
+                {
+                    throw error::AronException("Reader", "readAronInclude", "Could not find an aron XML file. Last path tried was: " + resolved_absolute_path.string());
+                }
+            }
+        }
+        // else path is absolute
 
         // parse parent xml file and add objects to alreday known
         Reader anotherReader;
-        anotherReader.parseFile(xmlinclude);
+        anotherReader.parseFile(resolved_absolute_path);
 
         if (Data::HasAttribute(node, Data::AUTO_CODE_INCLUDE))
         {
-            std::string codeinclude = simox::alg::replace_last(xmlinclude, ".xml", ".aron.generated.h");
-            this->codeIncludes.push_back(codeinclude);
+            std::string codeinclude = simox::alg::replace_last(resolved_relative_path, ".xml", ".aron.generated.h");
+            this->codeIncludes.push_back("<" + codeinclude + ">");
         }
 
-        return xmlinclude;
+        return resolved_absolute_path.string();
     }
 
     typenavigator::ObjectNavigatorPtr Reader::readGenerateObject(const RapidXmlReaderNode& node) const
@@ -208,7 +231,7 @@ namespace armarx::aron::xmltypereader
     }
 
 
-    std::optional<fs::path> detail::resolveRelativePackagePath(const fs::path& path)
+    std::optional<fs::path> Reader::resolveRelativePackagePath(const fs::path& path)
     {
         const std::string package = *path.begin();
         armarx::CMakePackageFinder finder(package);
@@ -219,6 +242,7 @@ namespace armarx::aron::xmltypereader
                 fs::path absPath = includePath / path;
                 if (fs::is_regular_file(absPath))
                 {
+                    // path is valid
                     return absPath;
                 }
             }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Reader.h b/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Reader.h
index 387b2888dc23a44f3efebe832163a9888be249bc..c44f7d629fff62d5fb284dfe28445f4f7c4b9f5d 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Reader.h
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/Reader.h
@@ -54,21 +54,17 @@ namespace armarx::aron::xmltypereader
         virtual void parseFile(const std::filesystem::path&) override;
 
     private:
-        void parse(const RapidXmlReaderPtr& node);
+        void parse(const RapidXmlReaderPtr& node, const std::filesystem::path& filePath);
 
-        std::string readCodeInclude(const RapidXmlReaderNode& node);
-        std::string readAronInclude(const RapidXmlReaderNode& node);
+        std::string readCodeInclude(const RapidXmlReaderNode& node, const std::filesystem::path& filePath);
+        std::string readAronInclude(const RapidXmlReaderNode& node, const std::filesystem::path& filePath);
 
         typenavigator::ObjectNavigatorPtr readGenerateObject(const RapidXmlReaderNode& node) const;
         typenavigator::IntEnumNavigatorPtr readGenerateIntEnum(const RapidXmlReaderNode& node) const;
 
+        std::optional<std::filesystem::path> resolveRelativePackagePath(const std::filesystem::path& path);
+
     private:
         ReaderFactory factory;
     };
-
-
-    namespace detail
-    {
-        std::optional<std::filesystem::path> resolveRelativePackagePath(const std::filesystem::path& path);
-    }
 }
diff --git a/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/ReaderFactory.cpp b/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/ReaderFactory.cpp
index 6bc140e98a8d8ae555490e9c2b07b3360ac176cc..42c4ae9eea4efcd7dc3688164aec22bb49507959 100644
--- a/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/ReaderFactory.cpp
+++ b/source/RobotAPI/libraries/aron/core/codegenerator/typeReader/xml/ReaderFactory.cpp
@@ -135,6 +135,8 @@ namespace armarx::aron::xmltypereader
         auto newObject = std::make_shared<codegeneratorhelper::GenerateObjectInfo>();
         newObject->typeName = name;
         newObject->correspondingType = aronObjectType;
+        newObject->doc_brief = Data::GetAttributeWithDefault(node, Data::DOC_BRIEF_NAME, "");
+        newObject->doc_author = Data::GetAttributeWithDefault(node, Data::DOC_AUTHOR_NAME, "");
 
         if (extends != "")
         {
@@ -151,6 +153,11 @@ namespace armarx::aron::xmltypereader
             Data::EnforceAttribute(objectChild, Data::KEY_ATTRIBUTE_NAME);
             const std::string key = objectChild.attribute_value(Data::KEY_ATTRIBUTE_NAME);
 
+            if (Data::HasAttribute(objectChild, Data::DOC_BRIEF_NAME))
+            {
+                newObject->doc_members.insert({key, Data::GetAttribute(objectChild, Data::DOC_BRIEF_NAME)});
+            }
+
             std::vector<RapidXmlReaderNode> children = objectChild.nodes();
 
             auto maybe = GetMaybe(children[0]);
@@ -394,16 +401,21 @@ namespace armarx::aron::xmltypereader
         newEnumInfo->typeName = name;
         newEnumInfo->correspondingType = aronIntEnumType;
 
-        for (const RapidXmlReaderNode& objectChild : node.nodes())
+        for (const RapidXmlReaderNode& valueChild : node.nodes())
         {
-            Data::EnforceTagName(objectChild, Data::ENUM_VALUE_TAG);
-            Data::EnforceChildSize(objectChild, 0);
+            Data::EnforceTagName(valueChild, Data::ENUM_VALUE_TAG);
+            Data::EnforceChildSize(valueChild, 0);
 
-            Data::EnforceAttribute(objectChild, Data::KEY_ATTRIBUTE_NAME);
-            const std::string key = objectChild.attribute_value(Data::KEY_ATTRIBUTE_NAME);
+            Data::EnforceAttribute(valueChild, Data::KEY_ATTRIBUTE_NAME);
+            const std::string key = valueChild.attribute_value(Data::KEY_ATTRIBUTE_NAME);
+
+            if (Data::HasAttribute(valueChild, Data::DOC_BRIEF_NAME))
+            {
+                newEnumInfo->doc_values.insert({key, Data::GetAttribute(valueChild, Data::DOC_BRIEF_NAME)});
+            }
 
-            Data::EnforceAttribute(objectChild, Data::VALUE_ATTRIBUTE_NAME);
-            const std::string value = objectChild.attribute_value(Data::VALUE_ATTRIBUTE_NAME);
+            Data::EnforceAttribute(valueChild, Data::VALUE_ATTRIBUTE_NAME);
+            const std::string value = valueChild.attribute_value(Data::VALUE_ATTRIBUTE_NAME);
 
             aronIntEnumType->addAcceptedValue(key, std::stoi(value));
         }
diff --git a/source/RobotAPI/libraries/aron/core/io/Data.h b/source/RobotAPI/libraries/aron/core/io/Data.h
index 6f9fe8ca878a6f7a8f697af1295fd6f0ccbe581b..e1c3cfcf026ba5019d5147e9c00cc2335c717065 100644
--- a/source/RobotAPI/libraries/aron/core/io/Data.h
+++ b/source/RobotAPI/libraries/aron/core/io/Data.h
@@ -46,6 +46,7 @@ namespace armarx::aron::io
         static constexpr const char* READER_WRITER_VALUE_SLUG = "__ARON_VALUE";
 
         static constexpr const char* READER_WRITER_OBJECT_NAME_SLUG = "__ARON_OBJECT_NAME";
+        static constexpr const char* READER_WRITER_OBJECT_EXTENDS_SLUG = "__ARON_OBJECT_EXTENDS";
 
         static constexpr const char* READER_WRITER_DICT_ACCEPTED_TYPE_SLUG = "__ARON_DICT_ACCEPTED_TYPE";
         static constexpr const char* READER_WRITER_LIST_ACCEPTED_TYPE_SLUG = "__ARON_LIST_ACCEPTED_TYPE";
diff --git a/source/RobotAPI/libraries/aron/core/io/dataIO/reader/nlohmannJSON/NlohmannJSONReader.cpp b/source/RobotAPI/libraries/aron/core/io/dataIO/reader/nlohmannJSON/NlohmannJSONReader.cpp
index 5d614b7025a52239be1ecc9933202c5a5aa3d26f..a17cc3ed151006531771e31e4639db4a972d34d5 100644
--- a/source/RobotAPI/libraries/aron/core/io/dataIO/reader/nlohmannJSON/NlohmannJSONReader.cpp
+++ b/source/RobotAPI/libraries/aron/core/io/dataIO/reader/nlohmannJSON/NlohmannJSONReader.cpp
@@ -43,7 +43,7 @@ namespace armarx::aron::dataIO::reader
     {
         if (!n.is_object())
         {
-            throw error::AronException("NlohmannJSONReader", "NlohmannJSONReader", "Allowed are only objects in reader");
+            throw error::AronException("NlohmannJSONReader", "NlohmannJSONReader", "Allowed are only objects in reader. Got as json: " + n.dump(2));
         }
 
         if (n.at(io::Data::READER_WRITER_TYPE_SLUG) != io::Data::READER_WRITER_DICT_TYPENAME_SLUG)
diff --git a/source/RobotAPI/libraries/aron/core/io/typeIO/Writer.h b/source/RobotAPI/libraries/aron/core/io/typeIO/Writer.h
index 7dc762492105af180e30773518b3b8ef1eaae963..db7b4ed1adc62ea9962bd14ce9993be51bb0cbec 100644
--- a/source/RobotAPI/libraries/aron/core/io/typeIO/Writer.h
+++ b/source/RobotAPI/libraries/aron/core/io/typeIO/Writer.h
@@ -141,5 +141,6 @@ namespace armarx::aron::typeIO
         virtual void writeTime(const WritePrimitiveInput&) = 0;
 
         virtual void writeKey(const std::string&) = 0;
+        virtual void writeExtends() = 0;
     };
 }
diff --git a/source/RobotAPI/libraries/aron/core/io/typeIO/writer/navigator/NavigatorWriter.cpp b/source/RobotAPI/libraries/aron/core/io/typeIO/writer/navigator/NavigatorWriter.cpp
index 9693eb6851131add3d419b8ecb55c15cc43518db..6a23d549a4ea915cfecc8e7645c88c7945355797 100644
--- a/source/RobotAPI/libraries/aron/core/io/typeIO/writer/navigator/NavigatorWriter.cpp
+++ b/source/RobotAPI/libraries/aron/core/io/typeIO/writer/navigator/NavigatorWriter.cpp
@@ -299,4 +299,20 @@ namespace armarx::aron::typeIO::writer
         auto token = stack.top();
         token->setCurrentKey(k);
     }
+
+    void NavigatorWriter::writeExtends()
+    {
+        if (stack.size() < 2)
+        {
+            throw error::SizeNotValidException("NavigatorWriter", "writeExtends", "The stacksize must at least be 2 (one for base, one for derived)", stack.size(), 2);
+        }
+
+        auto base = stack.top();
+        stack.pop();
+        auto derived = stack.top();
+
+        auto base_obj = typenavigator::ObjectNavigator::DynamicCastAndCheck(base->getElement());
+        auto derived_obj = typenavigator::ObjectNavigator::DynamicCastAndCheck(derived->getElement());
+        derived_obj->setExtends(base_obj);
+    }
 }
diff --git a/source/RobotAPI/libraries/aron/core/io/typeIO/writer/navigator/NavigatorWriter.h b/source/RobotAPI/libraries/aron/core/io/typeIO/writer/navigator/NavigatorWriter.h
index b15ab9e9b35fb140869017c2399f4e7345eda226..2586935e519799b7f7dd9c3f971a45bc4ab45d8f 100644
--- a/source/RobotAPI/libraries/aron/core/io/typeIO/writer/navigator/NavigatorWriter.h
+++ b/source/RobotAPI/libraries/aron/core/io/typeIO/writer/navigator/NavigatorWriter.h
@@ -72,6 +72,7 @@ namespace armarx::aron::typeIO::writer
         virtual void writeTime(const WritePrimitiveInput&) override;
 
         virtual void writeKey(const std::string&) override;
+        virtual void writeExtends() override;
 
         typenavigator::NavigatorPtr getResult() const
         {
diff --git a/source/RobotAPI/libraries/aron/core/io/typeIO/writer/nlohmannJSON/NlohmannJSONWriter.cpp b/source/RobotAPI/libraries/aron/core/io/typeIO/writer/nlohmannJSON/NlohmannJSONWriter.cpp
index 1ce3afe2394a3a20aa89948db49f97493d45865f..7a4359559aaf5169ef1bdac195937d540e8b3646 100644
--- a/source/RobotAPI/libraries/aron/core/io/typeIO/writer/nlohmannJSON/NlohmannJSONWriter.cpp
+++ b/source/RobotAPI/libraries/aron/core/io/typeIO/writer/nlohmannJSON/NlohmannJSONWriter.cpp
@@ -271,4 +271,28 @@ namespace armarx::aron::typeIO::writer
         auto token = stack.top();
         token->setCurrentKey(k);
     }
+
+    void NlohmannJSONWriter::writeExtends()
+    {
+        if (stack.size() < 2)
+        {
+            throw error::SizeNotValidException("NavigatorWriter", "writeExtends", "The stacksize must at least be 2 (one for base, one for derived)", stack.size(), 2);
+        }
+
+        auto base = stack.top();
+        stack.pop();
+        auto derived = stack.top();
+
+        if (!base->getElement().is_object())
+        {
+            throw error::AronException("NlohmannJSONWriter", "writeExtends", "Could not inherit from a non-object.");
+        }
+
+        if (!derived->getElement().is_object())
+        {
+            throw error::AronException("NlohmannJSONWriter", "writeExtends", "Could not inherit a non-object.");
+        }
+
+        derived->getElement()[io::Data::READER_WRITER_OBJECT_EXTENDS_SLUG] = base->getElement();
+    }
 }
diff --git a/source/RobotAPI/libraries/aron/core/io/typeIO/writer/nlohmannJSON/NlohmannJSONWriter.h b/source/RobotAPI/libraries/aron/core/io/typeIO/writer/nlohmannJSON/NlohmannJSONWriter.h
index 3be0f4a1329aca74ad3c19710736a86f1c542582..055a493c878fbb76b4fed7dc41d08e680a71d976 100644
--- a/source/RobotAPI/libraries/aron/core/io/typeIO/writer/nlohmannJSON/NlohmannJSONWriter.h
+++ b/source/RobotAPI/libraries/aron/core/io/typeIO/writer/nlohmannJSON/NlohmannJSONWriter.h
@@ -69,6 +69,7 @@ namespace armarx::aron::typeIO::writer
         virtual void writeTime(const WritePrimitiveInput&) override;
 
         virtual void writeKey(const std::string&) override;
+        virtual void writeExtends() override;
 
         nlohmann::json getResult() const
         {
diff --git a/source/RobotAPI/libraries/aron/core/navigator/type/container/Object.cpp b/source/RobotAPI/libraries/aron/core/navigator/type/container/Object.cpp
index 410ecaedd54896288b2c6d399b3d3994040632c7..d5e028477cb93837e70cedf95d321652e8a14db6 100644
--- a/source/RobotAPI/libraries/aron/core/navigator/type/container/Object.cpp
+++ b/source/RobotAPI/libraries/aron/core/navigator/type/container/Object.cpp
@@ -75,6 +75,19 @@ namespace armarx::aron::typenavigator
     }
 
     // public member functions
+    std::map<std::string, NavigatorPtr> ObjectNavigator::getAllMemberTypes() const
+    {
+        std::map<std::string, NavigatorPtr> ret = memberTypes;
+        if (extends)
+        {
+            for (const auto& [key, t] : extends->getMemberTypes())
+            {
+                ret.insert({key, t});
+            }
+        }
+        return ret;
+    }
+
     std::map<std::string, NavigatorPtr> ObjectNavigator::getMemberTypes() const
     {
         return memberTypes;
@@ -82,10 +95,14 @@ namespace armarx::aron::typenavigator
 
     NavigatorPtr ObjectNavigator::getMemberType(const std::string& s) const
     {
-        if (memberTypes.find(s) == memberTypes.end())
+        if (memberTypes.find(s) == memberTypes.end() and !extends->hasMemberType(s))
         {
             throw error::StringNotValidException("ObjectNavigator", "getMemberType", "Member not set. The list of all members is: " + simox::alg::to_string(simox::alg::get_keys(memberTypes)), s);
         }
+        if (memberTypes.find(s) == memberTypes.end())
+        {
+            return extends->getMemberType(s);
+        }
         return memberTypes.at(s);
     }
 
@@ -118,7 +135,7 @@ namespace armarx::aron::typenavigator
 
     bool ObjectNavigator::hasMemberType(const std::string& k) const
     {
-        return memberTypes.count(k) > 0;
+        return memberTypes.count(k) > 0 or (extends && extends->hasMemberType(k));
     }
 
     std::string ObjectNavigator::getObjectName() const
@@ -138,6 +155,13 @@ namespace armarx::aron::typenavigator
         {
             ret.push_back(k);
         }
+        if (extends)
+        {
+            for (const auto& s : extends->getAllKeys())
+            {
+                ret.push_back(s);
+            }
+        }
         return ret;
     }
 
@@ -159,6 +183,13 @@ namespace armarx::aron::typenavigator
         {
             ret.push_back(t);
         }
+        if (extends)
+        {
+            for (const auto& t : extends->getChildren())
+            {
+                ret.push_back(t);
+            }
+        }
         return ret;
     }
 
@@ -169,7 +200,7 @@ namespace armarx::aron::typenavigator
 
     std::string ObjectNavigator::getName() const
     {
-        return "AronObjectType<" + this->aron->objectName + ">";
+        return "AronObjectType<" + this->aron->objectName + (extends ? (" : " + extends->getName()) : "") + ">";
     }
 }
 
diff --git a/source/RobotAPI/libraries/aron/core/navigator/type/container/Object.h b/source/RobotAPI/libraries/aron/core/navigator/type/container/Object.h
index f3f9255646e22b826909ecc460a920a0b6071f97..71268a91ebf928b13a1347c778f758c43e756ace 100644
--- a/source/RobotAPI/libraries/aron/core/navigator/type/container/Object.h
+++ b/source/RobotAPI/libraries/aron/core/navigator/type/container/Object.h
@@ -37,7 +37,7 @@ namespace armarx::aron::typenavigator
     typedef std::shared_ptr<ObjectNavigator> ObjectNavigatorPtr;
 
     class ObjectNavigator :
-            virtual public detail::ContainerNavigatorBase<type::AronObject, ObjectNavigator>
+        virtual public detail::ContainerNavigatorBase<type::AronObject, ObjectNavigator>
     {
     public:
         // constructors
@@ -51,6 +51,7 @@ namespace armarx::aron::typenavigator
         // public member functions
         bool checkObjectName(const std::string&) const;
 
+        std::map<std::string, NavigatorPtr> getAllMemberTypes() const;
         std::map<std::string, NavigatorPtr> getMemberTypes() const;
         NavigatorPtr getMemberType(const std::string&) const;
         std::string getObjectName() const;
diff --git a/source/RobotAPI/libraries/aron/core/test/CMakeLists.txt b/source/RobotAPI/libraries/aron/core/test/CMakeLists.txt
index 239c92ecff42e75ea7be37b5e43c8d442983f678..9ea4438bbe3381ee9c92ae3cd4d6c656606e916c 100644
--- a/source/RobotAPI/libraries/aron/core/test/CMakeLists.txt
+++ b/source/RobotAPI/libraries/aron/core/test/CMakeLists.txt
@@ -44,22 +44,22 @@ armarx_add_test(
     ARON_FILES
         # xmls/BaseClass.xml
         # xmls/DerivedClassTest.xml
-        xmls/DictTest.xml
-        xmls/EigenMatrixTest.xml
-        xmls/EigenQuaternionTest.xml
-        xmls/EnumTest.xml
-        xmls/HumanPoseTest.xml
-        xmls/IVTCByteImageTest.xml
-        xmls/ListTest.xml
-        xmls/NaturalIKTest.xml
-        xmls/ObjectTest.xml
-        xmls/OpenCVMatTest.xml
-        xmls/OrientationTest.xml
-        xmls/PCLPointCloudTest.xml
-        xmls/PoseTest.xml
-        xmls/PositionTest.xml
-        xmls/PrimitiveTest.xml
-        xmls/OptionalTest.xml
+        aron/DictTest.xml
+        aron/EigenMatrixTest.xml
+        aron/EigenQuaternionTest.xml
+        aron/EnumTest.xml
+        aron/HumanPoseTest.xml
+        aron/IVTCByteImageTest.xml
+        aron/ListTest.xml
+        aron/NaturalIKTest.xml
+        aron/ObjectTest.xml
+        aron/OpenCVMatTest.xml
+        aron/OrientationTest.xml
+        aron/PCLPointCloudTest.xml
+        aron/PoseTest.xml
+        aron/PositionTest.xml
+        aron/PrimitiveTest.xml
+        aron/OptionalTest.xml
     INCLUDE_DIRECTORIES
         ${Simox_INCLUDE_DIR}
         ${Eigen3_INCLUDE_DIR}
@@ -81,11 +81,29 @@ armarx_add_test(
         ArmarXCore
         RobotAPI::aron
     ARON_FILES
-        xmls/NaturalIKTest.xml
+        aron/NaturalIKTest.xml
     INCLUDE_DIRECTORIES
         ${Simox_INCLUDE_DIR}
 )
 
+######################
+# ARON EXTENDS TEST  #
+######################
+armarx_add_test(
+    TEST_NAME
+        aronExtendsTest
+    TEST_FILE
+        aronExtendsTest.cpp
+    LIBS
+        Simox::SimoxUtility
+        ArmarXCore
+        RobotAPI::aron
+    ARON_FILES
+        aron/BaseClassTest.xml
+        aron/DerivedClassTest.xml
+    INCLUDE_DIRECTORIES
+        ${Simox_INCLUDE_DIR}
+)
 
 ########################
 # ARON RANDOMIZED TEST #
@@ -103,24 +121,22 @@ armarx_add_test(
         ivtopencv
         ${PCL_COMMON_LIBRARIES}
     ARON_FILES
-        # xmls/BaseClass.xml
-        # xmls/DerivedClassTest.xml
-        xmls/DictTest.xml
-        xmls/EigenMatrixTest.xml
-        xmls/EigenQuaternionTest.xml
-        xmls/EnumTest.xml
-        xmls/HumanPoseTest.xml
-        xmls/IVTCByteImageTest.xml
-        xmls/ListTest.xml
-        xmls/NaturalIKTest.xml
-        xmls/ObjectTest.xml
-        xmls/OpenCVMatTest.xml
-        xmls/OrientationTest.xml
-        xmls/PCLPointCloudTest.xml
-        xmls/PoseTest.xml
-        xmls/PositionTest.xml
-        xmls/PrimitiveTest.xml
-        xmls/OptionalTest.xml
+        aron/DictTest.xml
+        aron/EigenMatrixTest.xml
+        aron/EigenQuaternionTest.xml
+        aron/EnumTest.xml
+        aron/HumanPoseTest.xml
+        aron/IVTCByteImageTest.xml
+        aron/ListTest.xml
+        aron/NaturalIKTest.xml
+        aron/ObjectTest.xml
+        aron/OpenCVMatTest.xml
+        aron/OrientationTest.xml
+        aron/PCLPointCloudTest.xml
+        aron/PoseTest.xml
+        aron/PositionTest.xml
+        aron/PrimitiveTest.xml
+        aron/OptionalTest.xml
     INCLUDE_DIRECTORIES
         ${Simox_INCLUDE_DIR}
         ${Eigen3_INCLUDE_DIR}
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/BaseClass.xml b/source/RobotAPI/libraries/aron/core/test/aron/BaseClassTest.xml
similarity index 66%
rename from source/RobotAPI/libraries/aron/core/test/xmls/BaseClass.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/BaseClassTest.xml
index 57d4e6951e98ccb690b8e2c61e6730c067cf01e0..089b6fdfe8b56088c2b74ce2afd7717933cd7fc8 100644
--- a/source/RobotAPI/libraries/aron/core/test/xmls/BaseClass.xml
+++ b/source/RobotAPI/libraries/aron/core/test/aron/BaseClassTest.xml
@@ -2,28 +2,25 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <AronTypeDefinition>
     <GenerateTypes>
-        <GenerateObject name='armarx::BaseClassTest'>
-
-            <ObjectChild key='base_class_member1'>
+        <Object name='armarx::BaseClassTest' doc-brief="A base class for the tests" doc-author="fabian.peller-konrad@kit.edu">
+            <ObjectChild key='base_class_member1' doc-brief="This is a a fancy bool. Only set this if needed...">
                 <Bool />
             </ObjectChild>
 
             <ObjectChild key='base_class_member2'>
                 <List>
-                    <Type>
-                        <Float />
-                    </Type>
+                    <Float />
                 </List>
             </ObjectChild>
- 
+
             <ObjectChild key='base_class_member3'>
                 <Object name="InnerClass">
                     <ObjectChild key="inner_class_member">
                         <Bool />
                     </ObjectChild>
-                </List>
+                </Object>
             </ObjectChild>
 
-        </GenerateObject>
+        </Object>
     </GenerateTypes>
 </AronTypeDefinition>
diff --git a/source/RobotAPI/libraries/aron/core/test/aron/DerivedClassTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/DerivedClassTest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..fba1b8461bb41ffe9af7b62d044f6adf5aaea130
--- /dev/null
+++ b/source/RobotAPI/libraries/aron/core/test/aron/DerivedClassTest.xml
@@ -0,0 +1,16 @@
+<!--This class contains the data structure for NaturalIKResults -->
+<?xml version="1.0" encoding="UTF-8" ?>
+<AronTypeDefinition>
+    <AronIncludes>
+        <Include include="<RobotAPI/libraries/aron/core/test/aron/BaseClassTest.xml>" autoinclude="true" />
+    </AronIncludes>
+    <GenerateTypes>
+        <Object name='armarx::DerivedClassTest' extends="armarx::BaseClassTest" doc-brief="This is a brief doc" doc-author="Itse me, Mario!">
+
+            <ObjectChild key='derived_class_member1' doc-brief="This is a member doc string">
+                <Int />
+            </ObjectChild>
+
+        </Object>
+    </GenerateTypes>
+</AronTypeDefinition>
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/DictTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/DictTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/DictTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/DictTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/EigenMatrixTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/EigenMatrixTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/EigenMatrixTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/EigenMatrixTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/EigenQuaternionTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/EigenQuaternionTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/EigenQuaternionTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/EigenQuaternionTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/EnumTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/EnumTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/EnumTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/EnumTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/HumanPoseTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/HumanPoseTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/HumanPoseTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/HumanPoseTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/aron/IKResult.xml b/source/RobotAPI/libraries/aron/core/test/aron/IKResult.xml
new file mode 100644
index 0000000000000000000000000000000000000000..b382f9e9369e6833c88b10da32734f67bf5ccb7e
--- /dev/null
+++ b/source/RobotAPI/libraries/aron/core/test/aron/IKResult.xml
@@ -0,0 +1,17 @@
+<!--This class contains the data structure for NaturalIKResults -->
+<?xml version="1.0" encoding="UTF-8" ?>
+<AronTypeDefinition>
+    <GenerateTypes>
+        <Object name='armarx::IKResult'>
+
+            <ObjectChild key='name'>
+                <String />
+            </ObjectChild>
+
+        </Object>
+    </GenerateTypes>
+</AronTypeDefinition>
+
+
+
+
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/IVTCByteImageTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/IVTCByteImageTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/IVTCByteImageTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/IVTCByteImageTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/ListTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/ListTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/ListTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/ListTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/NaturalIKTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/NaturalIKTest.xml
similarity index 57%
rename from source/RobotAPI/libraries/aron/core/test/xmls/NaturalIKTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/NaturalIKTest.xml
index 06dc659d12d955b30b2113ffe7125e2320d96127..769a899a51e82d2c25e533b96bd1054f66565eef 100644
--- a/source/RobotAPI/libraries/aron/core/test/xmls/NaturalIKTest.xml
+++ b/source/RobotAPI/libraries/aron/core/test/aron/NaturalIKTest.xml
@@ -2,7 +2,16 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <AronTypeDefinition>
     <GenerateTypes>
+        <IntEnum name="armarx::NaturalIKControlMode">
+            <EnumValue key="CONTROL_MODE_0" value="0" />
+            <EnumValue key="CONTROL_MODE_1" value="1" />
+            <EnumValue key="CONTROL_MODE_2" value="2" />
+        </IntEnum>
+
         <Object name='armarx::NaturalIKResult'>
+            <ObjectChild key='control_mode'>
+                <armarx::NaturalIKControlMode />
+            </ObjectChild>
 
             <ObjectChild key='reached'>
                 <Bool />
@@ -13,7 +22,10 @@
                     <Float />
                 </List>
             </ObjectChild>
-
         </Object>
     </GenerateTypes>
 </AronTypeDefinition>
+
+
+
+
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/ObjectTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/ObjectTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/ObjectTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/ObjectTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/OpenCVMatTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/OpenCVMatTest.xml
similarity index 95%
rename from source/RobotAPI/libraries/aron/core/test/xmls/OpenCVMatTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/OpenCVMatTest.xml
index c5cfb1e95c41d72790a7a6a65b5d028adbeb0576..f4179798c6ed36ee9f48373ebe57c921bfcf448d 100644
--- a/source/RobotAPI/libraries/aron/core/test/xmls/OpenCVMatTest.xml
+++ b/source/RobotAPI/libraries/aron/core/test/aron/OpenCVMatTest.xml
@@ -4,8 +4,6 @@
     <CodeIncludes>
         <Include include="<opencv2/core/core.hpp>" />
     </CodeIncludes>
-    <AronIncludes>
-    </AronIncludes>
     <GenerateTypes>
         <Object name='armarx::OpenCVMatTest'>
             <ObjectChild key='the_2d_opencv_matrix'>
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/OptionalTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/OptionalTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/OptionalTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/OptionalTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/OrientationTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/OrientationTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/OrientationTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/OrientationTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/PCLPointCloudTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/PCLPointCloudTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/PCLPointCloudTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/PCLPointCloudTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/PoseTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/PoseTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/PoseTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/PoseTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/PositionTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/PositionTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/PositionTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/PositionTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/PrimitiveTest.xml b/source/RobotAPI/libraries/aron/core/test/aron/PrimitiveTest.xml
similarity index 100%
rename from source/RobotAPI/libraries/aron/core/test/xmls/PrimitiveTest.xml
rename to source/RobotAPI/libraries/aron/core/test/aron/PrimitiveTest.xml
diff --git a/source/RobotAPI/libraries/aron/core/test/aronExtendsTest.cpp b/source/RobotAPI/libraries/aron/core/test/aronExtendsTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..c9feaee398008091d3ef9e97161fec750e0b95ac
--- /dev/null
+++ b/source/RobotAPI/libraries/aron/core/test/aronExtendsTest.cpp
@@ -0,0 +1,85 @@
+/*
+ * This file is part of ArmarX.
+ *
+ * ArmarX is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * ArmarX is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @package    RobotAPI::ArmarXObjects::aron
+ * @author     Simon Ottenhaus ( simon dot ottenhaus at kit dot edu )
+ * @date       2019
+ * @copyright  http://www.gnu.org/licenses/gpl-2.0.txt
+ *             GNU General Public License
+ */
+
+#define BOOST_TEST_MODULE RobotAPI::ArmarXLibraries::aron
+
+#define ARMARX_BOOST_TEST
+
+// STD/STL
+#include <iostream>
+#include <cstdlib>
+#include <ctime>
+#include <numeric>
+
+// Boost
+#include <boost/algorithm/string.hpp>
+
+// Test
+#include <RobotAPI/Test.h>
+
+// ArmarX
+#include <ArmarXCore/libraries/cppgen/CppMethod.h>
+#include <ArmarXCore/libraries/cppgen/CppClass.h>
+#include <RobotAPI/libraries/aron/core/Exception.h>
+
+// Aron
+#include <RobotAPI/libraries/aron/core/Debug.h>
+#include <RobotAPI/libraries/aron/core/navigator/data/AllNavigators.h>
+
+// Generated File
+#include <RobotAPI/libraries/aron/core/test/aron/BaseClassTest.aron.generated.h>
+#include <RobotAPI/libraries/aron/core/test/aron/DerivedClassTest.aron.generated.h>
+
+using namespace armarx;
+using namespace aron;
+
+BOOST_AUTO_TEST_CASE(AronExtendsTest)
+{
+    std::cout << "Aron extends test" << std::endl;
+    BaseClassTest base;
+    auto baseType = base.toAronType();
+
+    DerivedClassTest derived;
+    auto derivedType = derived.toAronType();
+
+    for (const auto& [key, value] : baseType->getMemberTypes())
+    {
+        BOOST_CHECK_EQUAL(derivedType->hasMemberType(key), true);
+        //BOOST_CHECK_EQUAL(value == derivedType->getMemberType(key), true);
+    }
+
+    derived.base_class_member1 = false;
+    derived.base_class_member2 = {1.0, 2.5, 3.8};
+    derived.base_class_member3.inner_class_member = true;
+
+    auto derivedAron = derived.toAron();
+    //BOOST_CHECK_EQUAL(derivedAron->fullfillsType(baseType), true);
+
+    BaseClassTest& casted = static_cast<BaseClassTest&>(derived);
+    BOOST_CHECK_EQUAL(casted.base_class_member1 == derived.base_class_member1, true);
+    BOOST_CHECK_EQUAL(casted.base_class_member2 == derived.base_class_member2, true);
+    BOOST_CHECK_EQUAL(casted.base_class_member3.inner_class_member == derived.base_class_member3.inner_class_member, true);
+
+    DerivedClassTest& casted_back = dynamic_cast<DerivedClassTest&>(casted);
+    BOOST_CHECK_EQUAL(casted_back == derived, true);
+}
+
diff --git a/source/RobotAPI/libraries/aron/core/test/xmls/DerivedClassTest.xml b/source/RobotAPI/libraries/aron/core/test/xmls/DerivedClassTest.xml
deleted file mode 100644
index de4be250d23c90f27d8198d890e7ef0576d672cb..0000000000000000000000000000000000000000
--- a/source/RobotAPI/libraries/aron/core/test/xmls/DerivedClassTest.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<!--This class contains the data structure for NaturalIKResults -->
-<?xml version="1.0" encoding="UTF-8" ?>
-<AronTypeDefinition>
-    <CodeIncludes>
-        <Include include="<RobotAPI/libraries/aron/test/aron/BaseClass.aron.generated.h>" />
-    </CodeIncludes>
-    <AronIncludes>
-        <Include include="/home/fabian/Software/ArmarX/RobotAPI/source/RobotAPI/libraries/aron/test/xmls/BaseClass.xml" />
-    </AronIncludes>
-    <GenerateTypes>
-        <GenerateObject name='armarx::DerivedClass' extends="armarx::BaseClassTest">
-
-            <ObjectChild key='derived_class_member1'>
-                <Bool />
-            </ObjectChild>
-
-        </GenerateObject>
-    </GenerateTypes>
-</AronTypeDefinition>