Ive raised issue but its not a top priority so probably be too late for you.
But alternavitely you could:
- Use Jaikoz instead
- Use Discogs Import script direct in your web browser to submit direct to MusicBrainz
- Use Albunack, this groups Musicbrainz and Disocgs albums on one page so easier to see albums that are missing from MusicBrainz and then provides link to submit or link albums, although only works for albums by single artist not multiple artists currently.
All these solutions will get Discogs releases into MusicBrainz so can then be picked up by Roon.