See this discussion:

[5:00 PM] <ocharles> Here's why this all failed:
[5:00 PM] <ocharles> In http://musicbrainz.org/edit/15123110 you changed the track artists all to

{INFINITY16} welcomez {若旦那}
[5:01 PM] <ocharles> But in http://musicbrainz.org/edit/15123111, the track artists were originally {INFINITY16 welcomez 若旦那}
[5:01 PM] <ocharles> You changed track artist 1 to: INFINITY16 welcomez 若旦那 from 湘南乃風 & JAY'ED
[5:01 PM] <ocharles> So ModBot gets confused, and doesn't know if it's meant to be "INFINITY16 welcomez 若旦那 from 湘南乃風 & JAY'ED" or "{INFINITY16}

welcomez

{若旦那}

"
[5:02 PM] <ocharles> (because it was originally

{INFINITY16 welcomez 若旦那}

, so there are 2 options on what the correct data should be).
[5:02 PM] <ocharles> As far as ModBot is concerned, that's conflicting information, so it doesn't know how to proceed. For all it knows, someone else might have made that change, and the edit medium edit could break it

If the edit release artist edit passed after edit medium, this wouldn't be a problem. I suggest changing the order of edit insertion. Thoughts?