After installing Ultimate traffic, all the afcads are placed in the addon sceneryscenery folder, but many addon sceneries have their own afcad files in their own scenery folder. Which afcads are given priority and should i replace the UT afcad files with the addon afcads(commercial)by overwriting the UT ones and deleting the afcads from the commercial scenery folders? Paul.

Paul,You should always use the AFCADs supplied by commercial scenery as the parking gates and taxiways will be correctly aligned with the scenery. You may be lucky and get as many parking gates as Ultimate Traffic supplied but it's more important that the aircraft are correctly aligned with the buildings (so they don't park inside them!).For example I have Gary Summons' Manchester scenery and I use his Manchester AFCAD file. I rename the UT one so it isn't picked up.For default airports you can use the UT supplied one.Cheers,