I thought I had done this before, but maybe not. What I want is to use the DEM data to correct elevations of waypoints. Whenever I do "Correct elevations from DEM" on a file, it is only changing the track point elevations. I would also be satisfied to be able to convert the waypoints to track points and then do the elevations correction, but can't see a way to do that either (other than maybe writing a script outside TF to operate on the gpx file). Am I missing something here? The particular waypoints that I'm concerned with are ones that were created in TF using the Lap Analysis tool, which assigned elevations at waypoints only by linear interpolation between the track points (not good when they're far apart).