i have since GSX been unable to successfully tweak parking codes in the new afacd using ADE9X without not only losing FSDT customisations but the bulidings - to show in the addon manager KDFW as active but not installed ??
If you save your AFCAD with a different name, you will lost the GSX customization, and if you have two duplicates AFCAD for the same airport in the same folder, the scenery will not show.
If the Addon Manager says the scenery is active but not installer, it's because you manually removed the wrong file, not the AFCAD.
The Addon Manager needs to check if a file exist to see if the scenery is *really* installed, otherwise even users without KDFW installed would see bogus "trial KDFW" messages when they fly the KDFW area, but the check is NOT made on the AFCAD, since we know it's modified very often so, you must have modified or removed another of the .BGL files, which is why reinstalling it fixed the problem.
In any case, if you modify the AFCAD and save it with a different name, you will lose our customization, but the airport will still work as a default airport.
If you want to customize an AFCAD, save it with the same name. Reinstalling/Updating GSX or the Addon Manager will restore the original AFCAD IF the one in the scenery folder has been modified BUT, a backup named date-time-.BGL.BAK will be created so you will never lose your tweaks, just copy the backup back to the correct name after reinstalling GSX.