Please make an example of what do you mean with "not matching".
What you'll see in the GSX menu, on an FSDT airport, it's almost always more user-friendly and informative than what the AFCAD standard allows to developers, so they will have more user friendly names.
So, for example, what the simulator (and any other 3rd party utility that reads the scenery AFCAD) reports as "Gate C14 CARGO", it will be shown as "Cargo Stand C14" under the "UPS Worldport Ramp 3S" in the GSX menu. But they are the same parking.
If, instead, you mean you have misplaced positions too, that's another entirely different issue, which might be caused by an AFCAD conflict.