Take your account with you. A new Import & Export screen in Settings pulls everything you've ever posted off your relays into a file that's yours to keep, then pushes your history back to any relay that's missing it — one relay at a time, with progress for each, picking up where it left off. Replies got reworked too: every reply now records the post and the thread it belongs to, so reply labels and notifications land right. And muting a conversation finally silences the whole thing.