Dear vp72, being an Italian Customer, I suggest you to open a Support Case on Aveva GCS WEB
Anyway, if you export more than once the same 3D model during the same session, you need to apply a SAVEWORK so that the GUID is maintained.
Dear vp72, your colleagues already opened a Case on Aveva GCS Web site.
Case Number is 960066665
The Case has been closed since we had the reply from your company that you are able to manage that issue.
If you think the issue is still valid i suggest you to re-open the case.
GCS WEB is the "official" way to get support here in Italy.
I hope you understand.
Grazie
Thank you so much Corrado and sorry for the delay in the feedback.
What I seem to understand is that when we export the ifc of some systems we still have the replication of the parameters with different GUIDs; this despite the fact that you do savework between one extraction and the other because it is not an extraction of the entire model.