CATIA V5 to 3DEXPERIENCE CATIA V6 – FBDI Import Error (INFRA_1320): “Some data to update are already in session”

Hi everyone,

While importing a CATIA V5 assembly/Part into 3DEXPERIENCE CATIA V6, I’m getting this error:

INFRA_1320: Some data to update are already in session. Close them before doing FBDI

I’ve already closed all sessions — still no luck.

Has anyone come across this? Any workaround or cleanup step?

Thanks in advance!