Sonar does NOT provide a simple way to import/export/copy tracks, including setting and clips, to another project.
This has been requested for years. Many other DAWs do do this correctly.
How this not been an obvious fundamental function for the past ten plus years still amazes me.
To do it:
Move a bunch of tracks to a folder, save the folder as a track template. This will transfer settings and routings.
Copy the clips in each track in the first project to the corresponding track and time in the second.
And Robert's yer father's brother.