Scores don't appear?

This would seem simple - I installed the current stable version on a new system, and copied the Scores folder (including the hidden backup folder) with my stuff from my NAS drive. When I use file/open I see them, however they don't display on the home/scores tab until opened.

It's a minor annoyance, but I'd like to see all of the thumbnails without having to open every one. Is that possible?

Thanks!!