Basecamp Doesn't See Maps on my Oregon 450 or Win 10 Laptop

I had no problems loading maps to my Oregon 450 on a previous Windows7 Pro laptop. The maps last loaded on my 450 SD Card are from 2018, City Navigator North America v8.img and Topo U.S. 24K Southeast.img. BC on my new Windows 10 laptop see my 450. I can manipulate all the data, tracks, points and such but BC only sees the global map and worldwide DEM base map. 

I've tried plugging the SD card directly into the laptop to no avail. I tried having the Topo CD in the drive to no avail. Using BC map install I get "no unlocked maps were found on the device". I have gone through the forum multiple times trying all of the suggestions that were remotely similar.