Import a Profile is failing silently

from the #MR58, I imported this profile inside an UML Blank Project and all seems work fine... But closing the project, waiting 1 minute and reopening it, the project is empty. 👎

The import works fine for simple profile, but fails with the profile in attachment...

Papyrus-ProfileExample.profile.uml

The problem was the ACTION_LANGUAGE profile was apply on the profile. But the upload action must not failed silently...