Migrating docker containers without breaking plex?

I run two unraid servers, one is off 90% of the time it just boots up when its time to run the weekly backup and then shuts itself down afterwards (via ipmi commands). I'd love to be able to run a backup and then kick all my docker containers off on the main server and run from the backup so I can do maintenance but everytime I do that plex seems to think its a whole new server. Is there a right way to do this without plex making me reshare the server to everyone? All my other containers seem to just work fine after I do this. I really wish I would have never set up plex in the first place and made everyone use jellyfin instead.