Folder
c:\Users<USER NAME>\AppData\Local\Packages<your MSFS: Microsoft.FlightSimulator_8wekyb3d8bbwe>\SystemAppData\wgs<your ID: 0009000003981155_00000000000000000000000069F80140>
subfolders have files with no extension and are
- binary garbage
- xml files with your custom bindings, per device and per name, readable
I zip this subfolder total as a backup now, not my find, someone on the forum