Downloading saved courses from 820 to computer

Hello,

I have several rides saved as courses on my 820 after riding them. Since I won't be riding them again soon I would like to move them from my 820 (to keep the overview) and save them on my computer so I can upload them again at a later point.

What is the best way of doing this? Can I drag and drop the files when connected via usb, or....

Thx