I have the Mag platinum and I have downloaded a topo map to the SD card using an external card reader. That worked perfectly. I just added a second map to the card and I can't seem to access it. The first map is fine. The second map is of an area I plan to travel to and when I move the cursor there the topo map and extra details are not there. What am I missing? I do not see the new file in any of the database windows and I did confirm that it is on the SD card.
Thanks
Wil