System to subsystem transition - not working with fragmented model

I have observed a problem with the System2SubSystemTransition and model fragmentation:
Create a new Capella project
Create some elements in the [PA]
Create the Sub-Capella-Project, make a fragment of the System-Analysis
Mark and right-click the elements to transfer and use “System to SubSystem Transition” > Vertical > SA
Leave all fields to their default and complete the wizard
==> There are no elements generated in the Sub-Model
If you use an unfragmented model everything seems to be ok
(except the issue reported already above
Is this also a bug or have I missed something?

can anyone confirm or deny this behaviour?
Is it a bug?
Kind regards

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