Having recently moved from Mapsource to BC, I'm probably missing something basic, but how does one upload a single track using the "send 'track' to device" button, without getting 2 or 3 other tracks that I can't even see in basecamp. So if I select a single track & then download e.g. Great70km , I also get Great70km 001 and Great70km 002, plus a track I rode two weeks ago, on etrex.