Hi ,
Thank you for your answer!
If I understand correctly, you only had this problem with one project, but starting again helped? I'm new to Twinmotion, and hadn't been able to import/direct-link anything from Revit yet.
Anyway, this weekend I tried the 2023.1-preview version of Twinmotion together with the latest Revit 2023.1 version, and in this combination the direct-link seems to work like it should! Same Revit model. Still doesn't explain why it didn't work in previous versions, but as long as this keeps working I'm happy.
Thanks again for your reply and your tips on things to try.
Have a good day!