If i go to the GSX editor and select "parking has 1 jetway" and tick the do not add a jetway it work?
If GSX said parking has 1 jetway", it's because it's using a custom jetway you added to that .INI. If the scenery has a SODE jetway, it's supposed to say "parking has an XML jetway" and don't let you edit antyhing.
You probably made that .INI file before that scenery added SODE jetways, or after you removed that scenery SODE XML file to add GSX jetways yourself ? In that case, you should probably remove that .INI, unless you really want to replace the SODE jetways that comes with the scenery. Is this your goal ?