I have some CDs where the music brains entry is faulty or incomplete. So locally my tags are complete and I’d like to export tags from my verified and correct tags to music brainz. Is this possible with picard?
If you want to add missing releases you can try the “Add Cluster as Release” plugin.
As for fixing existing entries you will need to edit on MusicBrainz.org directly. Please be aware of the Style Guidelines. Not everything you consider best for your local tags might be correct for entering on MusicBrainz.