I just got a Garmin Etrex Vista HCx and have been messing around with maps off this website. So i downloaded a wisconsin topo and wisconsin snowmobile trail maps. I put the wisconsin topo on and i liked it so i added the snowmobile trail maps on and it deleted my wisconsin topo map. Is there a way i can save both of them on the card and just switch between them instead of putting them back on everytime i want to use them? Thanks