Ground control sends me to bad runways

I am trying to edit KEDW (Edwards AFB)adding parking spots and AI traffic for FSX. The air field has many runways and a lot of them are dirt in the dry lake bed. Here's the problem, all of the dirt runways are shown as closed for take off and landings, but the ground control keeps wants to taxi you to a dirt runway for take off. Aside from the fact I don't want to use dirt runways, because they are closed you and the AI traffic can't get permission to advance past the hold short point. Any ideas how to fix it?