Yes, some patches in the game move up and down. I can now convert them to gm so I can view them with the tool, but unfortunately not edit them. Theyre not really steps, just slopes (same for the steps in the buildings). I thought of maybe editing the patches in a modeler, but when reconverting to gm you have to put some more numbers besides the points and triangles into the .ptc file - I wish I knew what those numbers are.