Well, you can reverse the track by using the 'merge tracks' tool on the tool bar. Just select it, then right click somewhere in the map and choose reverse. Then save it out by right clicking again.
But, the time stamps will be going back in time, and I don't think the Edge will accept that. Most likely when you try to upload TopoFusion will create fabricated timestamps for you, at a constant speed.
There are tools out there to fabricate timestamps in a little more controlled fashion, but I don't know of way to reverse and maintain timestamps.