Tree in dynaf

Hello, (new to forum and CDK). I’m making custom hangar but i have problem with dynaf. When i place one, tree still spawn. If i put the dynaf in the air, trees still spawn on it. Is there a way to have dynaf without trees? I tryied multiples maps, same issue over again. It give me headach.

I am not sure, but probably not if you use existing map.
If you do not want to create new location in Location Editor, then you should choose another place for AF.