Ola Brian,
We changed the workflow now:
1) you add a fact model or have already a fact in your scene which you feel that the groups have some bad geometry for example.
2) if you have already your scene, your project done with materials and textures with Facts, it's not a problem.
3) select the bad groups in the project window or select the fact files.
4) go to menu bar / export / Validate Fact
5) it will open the import Fact file options
The beauty of this new feature is it re-import the groups without change the hierarchy, materials, textures, really cool and improve our workflow ;)
Thanks
Tom