I've been reading this question about a user getting a bounty in a dishonest way. My suggestion was to dissociate that answer from the user's account, but I wasn't sure if that would remove the bounty. A moderator responded to my comment saying that they don't think that post dissociation will remove the bounty, but they aren't sure:
I don't think post disassociation will remove the bounty. I've searched (and asked my fellow mods) but can't find a definitive answer on that.
The FAQ says that:
All reputation you had previously gained/lost from the post will also be reversed.
But it isn't clear if this also applies to bounties, or only to votes and accepted answers.
So what happens to bounties on a post dissociation? Does the bounty get refunded to the user who gave it? Does the user who earned it lose it again but without anyone else earning it? Does the user who earned it get to keep it?