Pathmap completely upsidedown

This is what happens when I try to add elements by map.

In 3d view it looks normal, but I solved it by trying all the "refresh" options available. Suddenly it became normal.

The map is very large and, being real, the dimensions are practically right (11 km in length by a maximum of 1 in width), without considering everything I put in it. I therefore assumed that the heaviness of the map may have influenced the loading of the pathmap. Now it works and I am creating a small bus line for understand how it works.