I really don't know how to exactly explain this..... I have spots on my route where I can't adjust the roads and track to meet the height of the terrain. I have shallow bowl like places that can't be filled in. The only solution to fill these is either a retaining wall or placing a bridge.
What could cause this? I have never encountered this before...… There is nothing below the scenery that I can find that could cause this. it's like something is locked.
Thanks.