Areas fenced with a specific fence type are no longer considered fenced by TS2012. The Object Spline tool does not recognize them. They are marked with parallel dashed white lines and are only selectable with the Tracks tool. It seems that a particular fence type has been changed from a spline to a track. I suspect that the fence is Lefarge Fence S, a mesh fencing which is useable as a normal spline.. The route is Evansville/Checkrail.