I have some tracks that have tags that will not change in Music Brainz Picard. PLease see this screenshot from kid3. Note that the Artist and Album information are different in Tag3 (APE) from Tag2.
And notice in the screenshot for the same track in Picard that only Tag2 shows. I have saved and resaved that track’s tag data trying to figure it out and I cannot figure it out. I’d rather not rely on kid3 or another editor like mp3tag. I’d like to do all this in Picard.