I can create a GPX file and upload it to the bike. The file appears in the list, it imports, calculates, and displays the route. The problem is two fold. The first problem was that if your start point and end point are the same the route would delete the end point and the route would stop at the last waypoint prior to the end point. I'm working around that by having the start and end points be very close to each other but not in the same spot. Now I end a block from my house.
Second issue is that the waypoints do not always appear in the order they were created in the GPX file. Does the Wing simply take the waypoints from the GPX file and create it's own route in whatever order it deems best? Is there a fix for this?