e.g. http://beta.musicbrainz.org/release/d12bb46a-b078-4845-b634-a1315413b6f9

Both mediums had annotations. I removed all the text from them in http://beta.musicbrainz.org/edit/17162187 and http://beta.musicbrainz.org/edit/17162184 and then merged the two releases together in http://beta.musicbrainz.org/edit/17162189

When the releases were merged, an empty annotation plus an empty annotation should result in another empty annotation. It did not: http://beta.musicbrainz.org/release/d12bb46a-b078-4845-b634-a1315413b6f9/edit_annotation