I have four versions of "City Navigator North America NT" installed on my PC (Window 10), all installed to the same folder (D:\Garmin\Maps\): 2019.10, 2019.11, 2019.20, and 2020.10. 2020.10 was just installed today.
Prior to installing 2020.10, all three previous map versions were displayed under the Maps menu and Maps -> Manage Map Products.
After installing 2020.10, now only 2019.20 is displayed under the Maps menu, and under Maps -> Manage Map Products. I cannot see the newly installed version, nor can I see the older ones.
Any pro tips on resolving this would be appreciated!
Thanks,
Mark