I downloaded some new scenery and afcads for a few different airports. I found that GSX is using the afcads for those airports from my traffic add on. Is there anything I can do so that I can use GSX at these airports.
Just place the AFCAD you want to use, on a layer which is higher on the Scenery Library than the one that comes with the AI Traffic package.
Note that, the AFCAD must be "self-contained" to work with GSX. Meaning, it should contain at least parkings and a network of taxiways, which is the minimum that GSX needs to work. AFCADs that just "enhance" another AFCAD (like a default one), will not work with GSX: