Reinstalled Windows 10, reinstalled Basecamp, now I can't see my maps

Hello All:

Recently I had to reinstall Windows on my Surface Book 2 computer because of a problem I was having with Wi-FI connectivity.  I accomplished this OS reinstall by 'restoring' Windows 10, which removed all applications that did not come with Windows 10 but left all of my documents and data intact.

I have since reinstalled Basecamp, but it does not show either of the two maps I had previously 'installed to computer', those being the current versions of City Navigator Europe and City Navigator North America (I own two GPS devices, a Zumo 590 Americas and a Zumo 660 Atlantic).

Is there a way to re-link Basecamp to these two maps?  I know I could accomplish this by connecting the navigators to the computer and reinstalling the maps, but at the moment, I am in Poland and both of my navigators are at home in Canada.  So I am seeking a way to link Basecamp up with the maps that still remain on my hard drive, perhaps through registry settings or similar.

Any advice would be greatly appreciated, because I will not return home until mid-October and I would like to use Basecamp and the maps on my computer to plan routes that I will navigate with the built-in GPS on my rental car.

Thank you.