Hi, I'm making a board with a rectangular cutout in the center. I used the "solid region" tool to create a rectangle on the "multi-layer" layer. I also used the "track" tool to draw an outline in the "bourd outline" layer. Should be fine, right? But, for some reason, traces are passing right through this region when I auto route. What do I need to do to get auto route to recognize this as an off limits area?