The tags musicbrainz_originalalbumid and musicbrainz_originalartistid are currently on partially mapped. We can map it to all formats following the same schema as other MBID tags.

See also how Jaikoz it doing it, see:

https://docs.google.com/spreadsheets/d/1afugW3R1FRDN-mwt5SQLY4R7aLAu3RqzjN3pR1497Ok/edit#gid=0