title: Visual Studio Property Sheet properties not showing up
body: <p><strong>Symptom:</strong></p>
  
  <p>Visual Studio property sheet properties not showing up after add existing property.</p>
  
  <p><strong>Repro:</strong></p>
  
  <ol>
  <li>Create property sheet according to Microsoft's recommended steps: <a href="https://msdn.microsoft.com/en-us/library/669zx6zc.aspx#bkmkPropertySheets" rel="nofollow">https://msdn.microsoft.com/en-us/library/669zx6zc.aspx#bkmkPropertySheets</a></li>
  <li>Copy *.props file to a different project's directory</li>
  <li>Add this existing property sheet to project. </li>
  <li>Open property sheet in Visual Studio. No properties are shown. </li>
  </ol>
  
  <p>The .props file will have properties, but builds will fail and VS won't see it. </p>