title: Wix throws away components that are marked as NeverOverWrite="yes"
body: <p>I've created an installer that upgrades our software, but for some reason the XML configuration files (those of our software) are removed when upgrading.</p>
  
  <p>This appears to happen if all features of the software are upgraded.
  Our software is an archive type thing. If I install just that feature and upgrade it everything is fine.</p>
  
  <p>However, if I install all services accompanying the archive and upgrade those then all configuration files (and each is in a different folder!) are gone.</p>
  
  <p>As an example:</p>
  
  <pre><code>&lt;ComponentGroup Id="AutoArchiveTool" Directory="AutoArchiverFolder"&gt;
       &lt;Component Id="C_AutoArchivingTool_Gateway_exe_config" NeverOverwrite="yes" Guid="{A62D5200-FDE0-4DA1-A04A-7FBDACEA83B2}"&gt;
         &lt;File Id="F_AutoArchivingTool_Gateway_exe_config" Source="$(var.Gateway.TargetDir)Gateway.exe.config" KeyPath="yes"/&gt;
       &lt;/Component&gt;
  ... more script
  &lt;/ComponentGroup&gt;
  </code></pre>
  
  <p>If you log the installer you can even see that it's recognized as "never overwrite":</p>
  
  <pre><code>Disallowing installation of component: {A62D5200-FDE0-4DA1-A04A-7FBDACEA83B2} since the keyfile exists and the component is marked to never overwrite existing installations
  </code></pre>
  
  <p>Yet it's gone after the upgrade. What am I missing?
  I've see the "Permanent" property, but that's not what I want. I want the installer to leave the config files alone during an upgrade. Not leave them (config files) after removal.</p>