Could be in 2 places dependiing on mode you are in (in windows)
Comment by @ikraus in
I am also using my printer (X1C) without being logged in to my slicers.
Be aware that this does change the storage location of your user presets and those presets will not sync.
Logged in, your Studio presets are in subfolders of C:\Users\%username%\AppData\Roaming\BambuStudio\user\##########
where ########## is a number.
Without logging in, they will be in C:\Users\%username%\AppData\Roaming\BambuStudio\user\default
User presets created while logged in will not be available when logged out, and vice versa.
User presets can be manually ‘synced’ by copying the .info and .json files from one folder to the other.
This may be a useful method of sharing a printer among family members or trusted users on the same LAN, without the need to share a password.