Routing Issues

I'm making my world from Sunset Valley. In the problem area, that stretch of road is surrounded by unroutable paint, but the road is routable and the paint doesn't come all the way up to the road. I painted under the road and exported again. So far I've played 5 sim days with only one stuck sim. That was a role sim, and the spot Overwatch took me to was the cliff below that same area of road. But when I zoomed out I saw that sim and a tourist way over at the edge of the screen, where it is camera unroutable. Now I wonder if I'd zoomed out before, would I have seen the sims over in that area too?