title: Adding existing edmx file, entity classes, context to a new solution
body: <p>I am updating my existing mvc 3 app to an mvc 5 one. Using Vs2013.
  I just decided to create a new mvc 5 solution and simply copied
  over the folders with the views, models, business logic, pasted in the connection strings etc. However any which way (add existing files or include in project) I try to carry over the edmx file things go wrong. In the old project I have the edmx and the .tt and entities stacked/scoped under it. However when I add this to the new project the original structure falls apart and the tt files and poco classes are no longer stacked under the .edmx, not only that but I get renamed duplicates/copies of the context files and others e.g ModelContext1.cs in addition to ModelContext that is scoped under the ModelContext.tt file. How can I carry over the .edmx file and stacked structure intact with no duplicates ? Also if there is a way to stack the files back under the .edmx file manually, how can this be done ?</p>