I am not quite sure what you are trying to do, from your post.
There is nothing magical about Sonar project folders. If you are using per-project audio folders, then you can move any Sonar project folder around to your heart's content, in terms of having backups.
If you are seeking to move the default location where Sonar STORES/ACCESSES project folders, then you go into Edit>Preferences>File>Folder Locations, and point to the folder location you want to use for the default project folder location for Sonar.
But, if you are just wanting to make a copy of a folder, you can just copy and paste it wherever you like.
I hope that helps - please explain if I completely missed the mark on what you are needing assistance with.
Bob Bone