Can I Edit a Trip created on Garmin 52 in Basecamp, and if so, how do I do it?

I loaded a set of road trip end  points into my Garmin 52 .  I then used the Trip Planner on the Garmin 52 to create a set of routes, which looked pretty good for driving.  I then downloaded them into Basecamp in Windows to see them with better detail.  I noticed that here were parts of the trip I would like to make minor changes to, but I did not find any apparent way to do this without starting over and creating them again in Basecamp.

Is there a way to edit them in Basecamp with out starting over.

Thanks