Adrian, it's the latter, these are all recordings that were released or authorized by either the Jazz Workshop label that Charles started and sort of put Sue in charge of, or by a production sort of set-up Sue later started called East Coasting. For the most part Sue had these source tapes in hand it seems, which is not the case I bet with the other European recordings.
I'm not sure about the legal claim that Sue may have of the other recordings from this European tour. I would imagine that she has a clear claim and it's possible that we'll see more released "officially" in the future. We can hope.