This update will be easy thanks to FSDT Live Update ! The team invited GSX users to update now to version 2.2 to take advantage of the new “support for 3 Cargo Loaders at the same time, so you can finally use the Main Cargo door at any airport (not just KSDF) without forfeiting one of the 2 lower cargo doors, as in previous versions.”
Ground Services X is a must-have for Prepar3D V4 if you plan to migrate from an older simulator. Numerous and smooth animations of vehicles and 3D ground crews are busy around to attend your aircraft.
How do I upgrade if I already have this
You must have a shortcut “FSDT Live Update”.