Thanks! I did do that, but I cannot set a departure or destination airport from the CSV list (in Little Nav Map). I can create/export a .pln (in Little Nav Map), but when I load it into MSFS, it does not set me on the ground at the airports listed in the csv file. It sets me up in the air with the plane running...
Perhaps I simply do not know how to do this, but I have not found a way yet to start on the ground at one of the csv listed airports...
EDIT: I think I figured it out...after installing ArrowsAcrossAmerica in the Community folder, in LittleNavMap, I had to:
1. Go to Scenery Library (menu along the top).
2. Go to 'Load Scenery Library'.
3. Double check I had 'Flight Simulator Base Path' set correctly ("C:\MSFS" in my case).
4. Click the 'LOAD' button. It then took a few minutes to load in all airports, navaids, etc., including the new ArrowsAcrossAmerica user points and airports.
After this I was able to create/export and choose the flight plan successfully in MSFS 2020.