File location for filament User Presets

Where are the User Presets for filament stored in Bambu Studio?
They are not in C:\Program Files\Bambu Studio\resources\profiles\BBL\filament
FYI - - I run in LAN Only mode due to network limitations (no high speed connections available). So I want to back up all my User Presets on my server.

AppData\Roaming\BambuStudio\user\

Perfect.
Thank you.
Gene

Please feel free to contribute your filament presets to User Presets Collection on GITHUB, thanks !