title: Visual Studio - start up projects not saved
body: <p>I am using Visual Studio 2015</p>
  
  <p>I start Visual Studio, select several start up project using right click context menu </p>
  
  <p>Then I select Save All. Close Visual Studio. Open Visual Studio. Open Set Start Up Projects. </p>
  
  <p>Nothing is saved. I wonder if this setting can be saved in some user settings</p>