Best way to do a backup and restore from FreePBX 12 to 2.11

I am switching FreePBX server hosting providers as I have been having frequent problems with my current provider. The new provider will only use 2.11 as it is rock solid. I haven’t had any issues with 12, but if they use 2.11 that is what I will use. I don’t think backup and restore will work as the versions are different among other things. Any suggestions on how I should do this transfer?

You wont be able to backup a 12 and restore on 2.11. I would recommend taking your new 2.11 and upgrading it to 12 then restoring your backup from 12. Also note 2.11 is not receiving any updates and only major security patches and when 13 goes stable in the next few months it will receive nothing anymore.