title: File marked as Content -> Copy Always is not being copied
body: <p>I have a file in a folder of my C# VS2010 project marked <code>Content</code> and <code>Always Copy</code>.</p>
  
  <p>When I change this file and save it, externally to VS, and then run the project, the modified file is not copied to the output.  If I rebuild, then it is.  My guess is that VS does not use the modified date time stamp of the file to determine whether it should be copied or not.</p>
  
  <p>Am I missing something?  It's driving me nuts as I'm losing 5 minutes per run.</p>
  
  <p>Thank you!</p>