I am currently trying to merge several releases into a (very large) boxset. As the source releases sometimes reuse recordings across mediums whereas the target release doesn't, I received the attached error message.

However, although for this release there were at least 2 (likely more) incompatibilities blocking the merge, only one of the incompatibilities preventing the merge is displayed at a time, which means that one needs to attempt merging releases, fix the displayed error, wait for the fix to be applied, attempt merging again, and so on. As a result, users are likely to give up before they achieve their initial merging goal.

It would be much more helpful and efficient if all incompatibilities blocking the merge were displayed at once.