Hello:
Because your FS version is FS9.x, any Ground Polygons (aka "G-Polys") will be coded in SCASM / ASM, and may not be excluded via a BGLComp XML-type Exclusion
Rectangle.
Note that a BGLComp XML-type Exclusion
Rectangle is distinct from a CVX vector Exclusion
Polygon compiled for FSX / P3D ...using SHP2VEC from the FSX / P3D SDK.
AFAIK, FS2Kx G-Polys as legacy-type objects, when present in a scenery, are a VTP-type object, and can only be excluded by a VTP Exclusion.
Indeed, although UT-USA for FS9 does place 'some' legacy format scenery objects, IIRC, it did not cover the Caribbean area like the FSX UTX series product did
ultimate terrain
www.scenerysolutions.com
www.flight1.com
PS: Are you certain that at any time you did not previously install any this scenery ?
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3 airports St Maarten TNCM St Barts TFFJ Saba SABA TNCS 3 Islands covered with Photoscenery custom Autogen and Mesh Animated AI-Ships ranging from Windsurfers to Cruiseliners Animated car traffic Numerous details on Maho beach St Maarten approach Static Ships FSX version compiled for FSX-SP2...
secure.simmarket.com
The scenery covers the St-Marteen and St-Barthelemy islands with photorealistic textures including a full and specific autogen coverage The 3 airports include detailed building and a realistic AI traffic based on real aircraft and liveries Our goal during the development of this product was to...
secure.simmarket.com
Regardless, I'll take a look at the above linked airport "Grand Case" airport of St-Maarten for FS2004 by Delblond Christian in FS9 today when I get some time free, to see if I can ID any 'surprises' in it, vs. default FS2004 airport, vs. your
*.AD4 file.
GaryGB