Aug 30, 2012
The best way to see what happens is to give it a try.
Start with an Empty Solution. Then add a project (say an MVC project).
You will see that your Empty solution changes to a solution that is just the MVC project. In other words it 'takes over' the solution.
The 'work around' we found was adding a 'Solution Items' folder which is a good thing to have anyhow, to store solution artifacts, such as, documents, DDLs, textfiles, etc.
Hope this helps.