You should be able to copy and paste the musicbrainze unique file Id.
Be able to Copy and Paste MusicBrainze Unique File Id
You can (I Thought we discussed this in another posting)
I mean copy from the MusicBrainz website and then paste it into the Unique File Id field (THAT doesn’t work).
Yes but I explained to you why it didn’t do as you expected (because it wasn’t populating the Description field, because the Unique id Field is not MusicBrainz specific.) This problem will go away when an edit tab which is not ID3 specific, and there will be a field in the Detail tab in the next release