I just did a commercial delivered from Avid (AAF) without reelnames. Guess because of ama-linking.
The grade is done and ok.
Then I got a shorter version of the same commercial and a new AAF (same export procedure as the last one).
This AAF will import as a new session, but the grades from the first session will not automaticly apply on the clips. Both AAFs is imported exactly the same way and point to the files in the media pool.