Hello David,
i suggest you make a "Runway Number Update" with the Tool in VoxATC.
For precise Discription pls. see the Help file from VoxATC. Could be, that some Runway Numbers have Differences in FSX and the NAVDATA, because over time the Magnetic Heading of a Runway can change as the locations of the magnetic poles vary.FSX Data are outdated.This could be the Problem for VxATC to assign the
SID and Stars at some Airports.
Volker