2012 SSDT Reporting Services project - How do I import the rsds file from SharePoint 2013 into my Solution?

I am migrating reports from SharePoint 2007 to SharePoint 2013. The reports are not in a solution so I created a blank solution and I am adding a new Project for each folder the reports belong to. This is the only way it seem to be able to use the deploy function without send reports to the wrong location. But I am having trouble getting the RSDS file into the DataSource folder of the project. It doesn't like the SharePoint version of the file.

Thanks,

Phil