I did not realise that ActivityPub was this fragile: > Unfortunately, when an instance suspends another instance, all follow/follower relationships are immediately broken and aren't recovered by un-suspending, so you will have to find and re-follow your connections there.

Source: mstdn.socialmastodon.art yesterday.

Yeah, there's a unique integer per follow relationship; can't say exposing some database row ID in the protocol made so much sense - it makes it a lot harder to recover the follow graph if something happens to an instance