title: Unable to change Display Name of item, why?
body: <p>I'm running Sitecore 7.2, and I'm absolutely unable to alter the <code>DisplayName</code> of a number of items.</p>
  
  <p>Many don't give me any trouble, I change their name using the interface and their new DisplayName takes effect immediately (as in, I can see it in the Content Editor). For a few selected items however, the change gets reverted the moment I hit the "Save" button.</p>
  
  <p>I tried to alter the <code>DisplayName</code> using code, but to no avail:</p>
  
  <pre class="lang-cs prettyprint-override"><code>{
      using (new SecurityDisabler()) {
          item.Editing.BeginEdit();
          try {
              item.Appearance.DisplayName = newName.Trim();
          } catch (Exception e) {
              e.Data.Add(&lt;my stuff&gt;);
              throw;
          } finally {
              item.Editing.EndEdit();
          }
      }
  }
  </code></pre>
  
  <p>Again, the new <code>DisplayName</code> is immediately reversed. Could it be that there is a trigger modifying the item on <code>EndEdit()</code>? If yes, how can I double-check this?</p>