@seasick - I beg to differ.. heh.. I have a backup of the map data on my backup drive. I downloaded them to the only 32gb card I had, a Micro SD card. I then copied the "Garmin" directory on my "D" drive, and pulled the 32gb SD card from the boat and copied them onto it. It worked fine doing it that way.
Now, I think the files are locked to my Garmin expresss, so I doubt they would work for a different Garmin other than the 7610xsv that is registered on my account, but I was able to transfer the files themselves and tested both ActiveCaptain cards and they worked fine.
Oh, the reason I did this was so it did not take 2 hours to remake the SD card, but the Garmin did not like the MicroSD adapter card.
R