When editing a release that has a non-standard barcode, the user is asked to re-confirm it's correct as per the release (see http://beta.musicbrainz.org/release/88711a95-6c2a-4b46-b3a5-f94d60765804/edit for an example).

This seems just wrong - there's no reason we should be asking a user who didn't actually enter nor modify the barcode to confirm it's correct. There's no particular reason they need to even be able to do so - a user might want to fix capitalisation for a release they don't have, yet be forced to lie and say they're sure the barcode is like that on the release.