It's very strange situation when user add edits to MusicBrains, but don't have any possibility to get them automatically and he must again to type manually or go to open edits and copy manually. For example when I rip the CD, I go to MusicBrainz and take edits, and when rip is done I wanna to get already repair data, but NO, I must wait 2 weeks (and don't forget to get data) or manually to put the same data into tags again. So my suggestion is add tag, such as "+pending" to web xml service witch return xml file with all pending edits. Or maybe add option to every data type, for example: "+artist-credits-pending" "+label-pending" "+discids-pending" "+url-rels+pending" etc.