

I don’t.
Yeah, hot take, but basically there’s no point to me having to keep track of all that stuff and excessively worry about the dangers of modernity and sacrifice the spare time I have on watching update counter go brrrr of all things, when there’s entire peoples and agencies in charge of it.
I just run unattended-upgrades
(on Debian), pin container image tags to only the major version number where available, run rebuild of containers twice a week, and go enjoy the data and media I built the containers and installed for software for.
It could be conditioned to revision. If you want to have your posts moved, they would be checked over by the moderation at server B.
But the fact that not even that is an option in the first place means this is a nonstarter for anyone who is interested in keeping the history of their presence.