@Lyx @kirby @FrailLeaf @Owl @Owl @cassidyclown @drewdevault @kent @pernia Yeah, I'm not actually sure what you mean, but in ActivityPub, the URL where you fetch the actor's metadata is their ID, so that has to be unique, that's how you identify people, etc. You usually have a more expedient local ID.

To fix the issue with DMs, I think you can just use the same inbox as the old user. I don't think you have to change anything besides the AP ID. Pleroma might bug a little about nickname, but you could hack it.