Problem: The cursors or scenes are doubled indeed, but not the entries like animations or objects.
<Cursors newId="2" versionedId="-1" tableId="15">
<Cursor name="Standard1" id="0" order="0" lastModified="-1">
<CursorActiveAnimation parentLink="T" id="18" tableId="9" LinkAny="F"/>
<CursorInactiveAnimation parentLink="T" id="19" tableId="9" LinkAny="F"/>
</Cursor>
<Cursor name="Interface1" id="1" order="1" lastModified="-1">
<CursorActiveAnimation parentLink="T" id="18" tableId="9" LinkAny="F"/>
<CursorInactiveAnimation parentLink="T" id="19" tableId="9" LinkAny="F"/>
</Cursor>
</Cursors>
The duplicated cursor "Interface1" links to the same animations like the source cursor "Standard1". If I change now the active image of "Standard1" then the image is changed in "Interface1" also. This is not a duplication. This is like a symlink with an other name... If you delete one of the cursors now, the the editor is fully confused, but the remaining cursor links to empty entries now -> crash