When you reset taxiway draw flags for P3Dv2 default with ADE, you get a message to the effect that versions of FS prior to P3Dv2 ignore the drawSurface and drawDetail flags. This does not appear to be true for FS9.
FS9 does not draw taxiways normally if the drawSurface flag is set. FSX (and presumably P3Dv1.4) doesn't seem to care. Of course, these flags must be set for P3Dv2
So, if you maintain several versions of an airport from the same ADE file (as I do), you should reset, i.e., set to false, the draw flags before creating the FS9 .bgl.
Don
FS9 does not draw taxiways normally if the drawSurface flag is set. FSX (and presumably P3Dv1.4) doesn't seem to care. Of course, these flags must be set for P3Dv2
So, if you maintain several versions of an airport from the same ADE file (as I do), you should reset, i.e., set to false, the draw flags before creating the FS9 .bgl.
Don