If a scenery comes with its own docking systems, you should first decide which ones you want to use:
- If you prefer to use GSX's ones, you must find a way to disable the ones that comes with the scenery. They use different methods and we can't offer support how to do that here.
- If you prefer to use the scenery own docking system, you should check if there's an alternative GSX profile that doesn't use GSX docking systems. If that doesn't exists, you might create one yourself, by editing all parking position to set the parking system to None. But then you'll likely have to customize all GSX STOP positions to match the scenery docking system, which might be complex and not always possible, so usually it would be best to use GSX docking systems and disable the ones from airport.