Installed latest Garmin Express on PC (Win10), for use with my DriveSmart 60. It installed Basecamp 4.6, which updated to 4.7 after launch. I also installed the latest North American Map NT 2019.20 to the computer (the device already had been previously updated to contain that latest map). The expectation of course is that I can use Basecamp "standalone" whenever I want, to reference the installed map (on the PC) even when the GPS unit is not connected. That's the whole point of installing the map to the computer as well as to the device.
Everything went successfully and all software and maps are installed.
But it turns out Basecamp 4.7 does not seem to be aware of the map installed on the PC (and which DOES show up in Control Panel list of "installed programs"). If you don't have the GPS unit connected via USB cable the only map shown in Basecamp is the standard generic "Global map", with no real detail. Only if you do connect the GPS unit to the PC with the USB cable will Basecamp now read the map stored on the device and show its name under MAPS on the menu bar.
This is clearly wrong. There is absolutely no point in installing the map on the computer if it cannot be used. Otherwise, if it's only the map on the device which is usable by Basecamp then I would never choose to also install the map to the PC.
This has to be a defect.