new post to add an actual example (Jesus might hate me for bringing Brony music into the topic, but it is a really great example)
Vylet Pony is one of the biggest Brony artists of today, and has been releasing music for over 10 years. they’ve recently decided to go through their whole discography (which is pretty massive) and do some “spring cleaning” (in August, I know 
), revamping, remastering, and rereleasing some old releases, and “retconning”/removing other releases. from their video update about this, they give a few reasons for these to be removed from their canonical discography:
- It is redundant and otherwise made obsolete by another project, like being included in an album or something else [I’ve got a note about this one below]
- It is harmful, upsetting, or just entirely unaligned with my values as an individual
- It was created with toxic or otherwise mean spirited intentions
- It elicits bad memories and associations for one reason or another
I believe all these reasons (except perhaps #1) are excellent cases for a release being withdrawn.
some more withdrawn releases would be the ones getting revamped, remastered, and rereleased (the releases being replaced, not the replacements, to be clear)