I am currently running a PMS on a Raspberry Pi 4B with 32-bit Buster. I want to build a new server (on identical hardware) with 64-bit Bullseye and migrate all PMS settings, media, etc. over. Is there documentation available on how to do this?
The process for moving an installation to another system is described in this support article:
In the step titled “Copy Server Data from the Source System” it would likely be a good idea to tar and gzip the entire Plex data folder so that you’re not attempting to copy tens of thousands of tiny files.