According to this post, in 5.1, the Edge.Cuts Layer must be individual line segments, not polygons. I’m not sure if that is still true, but you may want to read through that post and do some experimenting.
According to this post, in 5.1, the Edge.Cuts Layer must be individual line segments, not polygons. I’m not sure if that is still true, but you may want to read through that post and do some experimenting.