@Criggie I missed this as I went over to matrix- yeah I had/have some kinda backups (always a victory, especially in this room)
I wasn't sure which postgres version they were from, and the homeserver management dealie (a big ansible thingy) didn't like the format
and the homeserver which made the backups wasn't online for me to check which version it used
thankfully yeah I was able to force using the postgres 16 image (the ansible thing uses docker to manage the various components) and the backup data loaded with no dealbreaking complaints there :)
really, the pain point(s) were in undoing some of the automation of the management