There is a global blockprops file in ".../blockprops/default.txt" which may need merging.
Bot AI files in ".../bots/[ai_script_name]" are server level too; these may need renaming and pointing at from the bot.json file.
It's not likely, but you may want to transfer the blockdb from ".../blockdb/mylevel.cbdb"; seriously not recommended though as it'll likely be huge and it's almost impossible to transfer correctly as it contains references to player ID numbers.
The "/warp" command (assuming it's ever been used) will need to be merged manually, file is ".../extra/warps.save"
I'll assume you can find the backups though, in the unlikely event that you want them. 🙂