I'm not feeling comfortable with the AR-type "compilation" at the moment.
First, I'm not sure about the exact meaning. Is there an official documentation?
"A is a compilation of B" could mean
- "A is part of B";
- Indicated by your above answers: "A is part of B, and the remaining material of B can be partitioned into other musicbrainz-recordings.
I would prefer the first option. But then, the name "compilation" is a bit unfortunate and should be changed IMO.
If it really is the second option, I don't like it as it would be a recording-recording relationship which depends on information "external" to the two involved recordings (which additionally might change over the time). In this case, I prefer "edit of" where the meaning is clear (albeit a bit vague).
Agreed, I will remove those two AR.
Remark: Mathematically speaking, we assume the relation "edit of" being transitive: If x is an edit of y and y is an edit of z, then for sure x is an edit of z, too. In this case, we don't have to add the latter AR explicitely, as it follows from the other two.