There should be a warning when merging recordings with different ISRCs, since that usually means they are different recordings
Agreed to fix within 3 months by http://scheduling.ocharles.org.uk/results and http://chatlogs.musicbrainz.org/musicbrainz-devel/2012/2012-06/2012-06-11.html
This is in review at http://codereview.musicbrainz.org/r/1948/ and available for test at http://test.musicbrainz.org/
Agreed to fix within 3 months by http://scheduling.ocharles.org.uk/results
and http://chatlogs.musicbrainz.org/musicbrainz-devel/2012/2012-06/2012-06-11.html