When using piping routing, I use the feature "start at point" often. I am working in a fairly large piping assembly. I added a new point, began sketching to it. I realized I wanted to invert the path (start at the termination point instead of the origin), so I deleted the connection point. Upon exiting, I no longer have the option to edit my route. The 3D sketch is completely gone. I could understand if I had deleted the point that defined the route, but this point was one of around 12 that I added after the fact. Where the heck did my sketch go??? I really hate the idea that I might have to delete the entire route because I'm unable to modify it at this point. Help please.