diff --git a/apps/opencs/model/world/commands.cpp b/apps/opencs/model/world/commands.cpp
index 1f8660bdde..eaded5b702 100644
--- a/apps/opencs/model/world/commands.cpp
+++ b/apps/opencs/model/world/commands.cpp
@@ -71,7 +71,7 @@ void CSMWorld::RevertCommand::redo()
 
 void CSMWorld::RevertCommand::undo()
 {
-    mModel.setRecord (*mOld);
+    mModel.setRecord (mId, *mOld);
 }
 
 CSMWorld::DeleteCommand::DeleteCommand (IdTable& model, const std::string& id, QUndoCommand *parent)
@@ -104,5 +104,5 @@ void CSMWorld::DeleteCommand::redo()
 
 void CSMWorld::DeleteCommand::undo()
 {
-    mModel.setRecord (*mOld);
+    mModel.setRecord (mId, *mOld);
 }
\ No newline at end of file
diff --git a/apps/opencs/model/world/idcollection.hpp b/apps/opencs/model/world/idcollection.hpp
index e65f11cef5..9ace34a093 100644
--- a/apps/opencs/model/world/idcollection.hpp
+++ b/apps/opencs/model/world/idcollection.hpp
@@ -66,15 +66,12 @@ namespace CSMWorld
             ///< If the record type does not match, an exception is thrown.
             ///
             /// \attention \a record must not change the ID.
+            ///< \param type Will be ignored, unless the collection supports multiple record types
 
-            virtual void appendRecord (const RecordBase& record) = 0;
+            virtual void appendRecord (const RecordBase& record,
+                UniversalId::Type type = UniversalId::Type_None) = 0;
             ///< If the record type does not match, an exception is thrown.
 
-            virtual std::string getId (const RecordBase& record) const = 0;
-            ///< Return ID for \a record.
-            ///
-            /// \attention Throws an exception, if the type of \a record does not match.
-
             virtual const RecordBase& getRecord (const std::string& id) const = 0;
 
             virtual const RecordBase& getRecord (int index) const = 0;
@@ -82,6 +79,9 @@ namespace CSMWorld
             virtual void load (ESM::ESMReader& reader, bool base,
                 UniversalId::Type type = UniversalId::Type_None) = 0;
             ///< \param type Will be ignored, unless the collection supports multiple record types
+
+            virtual int getAppendIndex (UniversalId::Type type = UniversalId::Type_None) const = 0;
+            ///< \param type Will be ignored, unless the collection supports multiple record types
     };
 
     ///< \brief Access to ID field in records
@@ -161,13 +161,10 @@ namespace CSMWorld
             ///
             /// \attention \a record must not change the ID.
 
-            virtual void appendRecord (const RecordBase& record);
+            virtual void appendRecord (const RecordBase& record,
+                UniversalId::Type type = UniversalId::Type_None);
             ///< If the record type does not match, an exception is thrown.
-
-            virtual std::string getId (const RecordBase& record) const;
-            ///< Return ID for \a record.
-            ///
-            /// \attention Throw san exception, if the type of \a record does not match.
+            ///< \param type Will be ignored, unless the collection supports multiple record types
 
             virtual const Record<ESXRecordT>& getRecord (const std::string& id) const;
 
@@ -177,6 +174,9 @@ namespace CSMWorld
                 UniversalId::Type type = UniversalId::Type_None);
             ///< \param type Will be ignored, unless the collection supports multiple record types
 
+            virtual int getAppendIndex (UniversalId::Type type = UniversalId::Type_None) const;
+            ///< \param type Will be ignored, unless the collection supports multiple record types
+
             void addColumn (Column<ESXRecordT> *column);
     };
 
@@ -344,17 +344,13 @@ namespace CSMWorld
     }
 
     template<typename ESXRecordT, typename IdAccessorT>
-    void IdCollection<ESXRecordT, IdAccessorT>::appendRecord (const RecordBase& record)
+    void IdCollection<ESXRecordT, IdAccessorT>::appendRecord (const RecordBase& record,
+        UniversalId::Type type)
     {
         mRecords.push_back (dynamic_cast<const Record<ESXRecordT>&> (record));
-        mIndex.insert (std::make_pair (Misc::StringUtils::lowerCase (getId (record)), mRecords.size()-1));
-    }
-
-    template<typename ESXRecordT, typename IdAccessorT>
-    std::string IdCollection<ESXRecordT, IdAccessorT>::getId (const RecordBase& record) const
-    {
-        const Record<ESXRecordT>& record2 = dynamic_cast<const Record<ESXRecordT>&> (record);
-        return IdAccessorT().getId (record2.isModified() ? record2.mModified : record2.mBase);
+        mIndex.insert (std::make_pair (Misc::StringUtils::lowerCase (IdAccessorT().getId (
+            dynamic_cast<const ESXRecordT&> (record))),
+            mRecords.size()-1));
     }
 
     template<typename ESXRecordT, typename IdAccessorT>
@@ -416,6 +412,12 @@ namespace CSMWorld
         }
     }
 
+    template<typename ESXRecordT, typename IdAccessorT>
+    int IdCollection<ESXRecordT, IdAccessorT>::getAppendIndex (UniversalId::Type type) const
+    {
+        return static_cast<int> (mRecords.size());
+    }
+
     template<typename ESXRecordT, typename IdAccessorT>
     const Record<ESXRecordT>& IdCollection<ESXRecordT, IdAccessorT>::getRecord (const std::string& id) const
     {
diff --git a/apps/opencs/model/world/idtable.cpp b/apps/opencs/model/world/idtable.cpp
index 79e33584b2..386ca87025 100644
--- a/apps/opencs/model/world/idtable.cpp
+++ b/apps/opencs/model/world/idtable.cpp
@@ -117,7 +117,7 @@ QModelIndex CSMWorld::IdTable::parent (const QModelIndex& index) const
 
 void CSMWorld::IdTable::addRecord (const std::string& id)
 {
-    int index = mIdCollection->getSize();
+    int index = mIdCollection->getAppendIndex();
 
     beginInsertRows (QModelIndex(), index, index);
 
@@ -131,13 +131,13 @@ QModelIndex CSMWorld::IdTable::getModelIndex (const std::string& id, int column)
     return index (mIdCollection->getIndex (id), column);
 }
 
-void CSMWorld::IdTable::setRecord (const RecordBase& record)
+void CSMWorld::IdTable::setRecord (const std::string& id, const RecordBase& record)
 {
-    int index = mIdCollection->searchId (mIdCollection->getId (record));
+    int index = mIdCollection->searchId (id);
 
     if (index==-1)
     {
-        int index = mIdCollection->getSize();
+        int index = mIdCollection->getAppendIndex();
 
         beginInsertRows (QModelIndex(), index, index);
 
diff --git a/apps/opencs/model/world/idtable.hpp b/apps/opencs/model/world/idtable.hpp
index 80476c5243..de0dde56e2 100644
--- a/apps/opencs/model/world/idtable.hpp
+++ b/apps/opencs/model/world/idtable.hpp
@@ -48,7 +48,7 @@ namespace CSMWorld
 
             QModelIndex getModelIndex (const std::string& id, int column) const;
 
-            void setRecord (const RecordBase& record);
+            void setRecord (const std::string& id, const RecordBase& record);
             ///< Add record or overwrite existing recrod.
 
             const RecordBase& getRecord (const std::string& id) const;