TFS Workspaces across VS 2010 and 2012?

Question

I am currently developing on Visual Studio 2012 RC using TFS Preview for source control. I would like to create an SSIS Integration project, which requires me to use Visual

Answer 1

In addition to the Location="Server" property mentioned in other answers/comments, the File Time property must be "Current", as shown below.

Workspaces created in Visual Studio 2012/2013 with either Location="Local" or File Time="Checkin" are not visible/usable in Visual Studio 2010.