title: TFS AD Sync not syncing on AD-group rename
body: <p>Good day guys,</p>
  
  <p>yesterday we just wanted to change some AD-Group names and their descriptions. We synced about ten times, but only strange things happened:</p>
  
  <ul>
  <li>We can´t find the renamed group in tbl_identity
  => We can only find the old group</li>
  <li>If we are searching the new group in TFS-Webinterface we can find the new group name, but if we add it to a project only the old name/description is shown.</li>
  </ul>
  
  <p>Our TFS: 2018.1</p>
  
  <p>Does anybody have an idea?</p>
  
  <p>Thx a lot guys!</p>