title: Apply existing build configuration to a new project
body: <p>Here is the scenario,</p>
  
  <ol>
  <li><p>Created a new Web application (MVC5, Empty template) as "MyMVCWebApplication".
  Default build configurations are Debug and Release as usual.</p></li>
  <li><p>Import an existing project "Commont.Logger" which has Debug, Release, Test and Prod build configurations.</p></li>
  </ol>
  
  <p>Once I added the Common.Logger project, VS 2013 show all Debug, Release, Test and Prod configurations in the build configuration drop down list (next to Run).</p>
  
  <p>But I cannot do "Add Config Transform" for the web config (for Test and Prod) in the web project. 
  Then I checked the "Configuration Manager", I noticed that it does not show Test and Prod configurations for the web project. In the Edit configuration it only has Rename and Remove, no "Add" function.</p>
  
  <p>How can I add these Test and Prod build configurations to the Web project? </p>