Yes, it does. Actually I’d highly recommend using the Import Bandcamp user script from @murdos ’ user scripts page (GitHub - murdos/musicbrainz-userscripts: Collection of userscripts for MusicBrainz, by various authors). It makes importing Bandcamp releases really simple, and it uses the existing URL to find an already linked release on MB.

Especially so for Bandcamp, as it does not have an API to query release info.