How to handle imported Things?

Hello,
I've just started to clean up the new VRML import to Cobalt, not to conflict
with the existing menu handling code. First I replaced the essential TGroup in
the VRLMCroquetBuilder by a TDragger. But that resulted in TFarRefs without a
name/OID.

I understand, that the existing code uses the scripting approach to attach the
CDefaultPopupMenu to the imported object. So I rejected the idea of the
TDragger/TSpinner from the importer and tried to rely on the popup menu to
initiate dragging/editing from there. But the menu doesn't appear. I tried this
also on the yellow button, because the blue button handles movement, but had
the same result -  no menu pops up.

I remember, there where popup menus in the Collaborative that showed up and
worked. Am I missing something?

Cheers...
Th. Braun