title: .net 4.5 service reference won't reuse 4.0 types
body: <p>In a .net 4.5 project I'm trying to create a WCF service reference that reuses types compiled in .net 4.0, but I can't get Visual Studio to reuse the 4.0 types in the service proxy.</p>
  
  <p>I can instantiate the types just fine, but the service reference generator refuses to pick them up. If I add the same service to a .net 4.0 project, the types are successfully reused.</p>
  
  <p>Does anybody know how to get a .net 4.5 generated service proxy to reuse .net 4.0 types?</p>