I have a VS-2012 solution using Entity Framework 5. The EDMX file is version 2.0:
<edmx:Edmx Version="2.0" xmlns:edmx="http://schemas.microsoft.com/ado/2008/10/edmx">
When I create a new project with VS and a new EDMX file it will be version 3.0. Since I have some trouble with not working features in the designer with the 2.0 version I want to migrate the EDMX file to the new version.
How do I do this?