Problem with airport & AFCAD

Hello there!
I'm having a bit of a problem with an airport and an AFCAD file I downloaded for LJLJ.
In reality 99% of all flights take off in one direction (RW13) and land in the opposite dirrection (RW31). When I set this up in AFCAD, by closing for takeoff/landing all flights take off on RW and all land also on RW13 and not RW31.
I'm having a bit of a problem with an airport and an AFCAD file I downloaded for LJLJ.
In reality 99% of all flights take off in one direction (RW13) and land in the opposite dirrection (RW31). When I set this up in AFCAD, by closing for takeoff/landing all flights take off on RW and all land also on RW13 and not RW31.