So,
After another update, i still have some issues still not fixed.
It appears GSX isnt reading / loading the afcad for some airports.
Weirdly, some airports work, others don't, some work - but partially.
FlyTampa OMDB has no gates, same for UK2000 EGLL & EGBB (and others), but some airports like UK2000 EGCC have gates, but not jetway animations, and some airports work fine, like Taxi2Gate OTHH & UK2000 EGKK.
Had a look at some of the files in appdata\roaming\virtuali\gsx.
In there a have a few config files such as egll-dfsso6.
I had a look at a few and some of these files have a [General] Section, with a path to the afcad.
Some files dont, some only list the afcad file name but no path
bit of fault finding, for the egll-dfsso6 file, it had no General section, so i manually added
[general]
afcad_path = D:\Users\<user>\Documents\Prepar3D v4 Add-ons\UK2000 Heathrow Xtreme\scenery\egll_AFX_UK2xGEN.bgl
Hoping it would solve the issue, only to find it hadnt.
Weirdly, UK2000 EGKK works fully for me, but its afcad path is just
[general]
afcad_path = EGKK_AFX_UK2xGEN.BGL
Could the issue be GSX isnt recognising afcads / populating the data correctly when regenerating airport cache?