My riding buddy and I gearing up for the MABDR. read most of the ride reports. We bought Butler maps and GPSkevin's SD card to use for the trip. Kev's map loaded up fine in my new Zumo 396. I also have installed the actual MABDR map from BDR and want to add Cannonshot's GPX too. Just to have for use along the way if needed. So my question is this: how do i manage all these ? Kev's stuff shows up as a map that i can toggle on and off. The MABDR map is not on the maps page, so i can't figure how to turn them off. I see em in the tracks location. If i scroll the actual GPS screen over to Virginia, the MABDR does show up as tracks which seem to be on the native Garmin map. It looks like these GPX files and Kev's files all overlap on the map. Is there a way to turn these MABDR/ Cannonshot GPX tracks on and off as needed? I have researched and read all the info for weeks.......... I'm trying to educate myself in the art of .gpx. I used a Nuvi for years mostly for near navigation and "where the hell are we"?? Up until now , still wrote route on paper and put in window on tank bag. Any advice really appreciated.