title: Xcode 4: Auto-complete & Jump to Definition broken in my Xcode 3 Project
body: <p>My project was created in Xcode 3, I'm opening it in Xcode 4 and notice the following:</p>
  
  <ul>
  <li><strong>'Jump to Definition'</strong> no longer works with my own symbols (However UI* and even TT* symbols do work fine!)</li>
  <li><strong>Auto-complete / 'Code sense'</strong> is as bad as Xcode 3, i.e., it suggests everything</li>
  <li>My projects' classes do not show up in the class navigator (Again, system and Three20 classes do show up!)</li>
  </ul>
  
  <p>When creating a <strong>new</strong> Xcode 4 project however, these features <strong>do</strong> seem to work. Unfortunately the only workaround seems to be to recreate the project and re-import everything. This project is too large!</p>
  
  <p><strong>Things I've tried:</strong></p>
  
  <ul>
  <li>Removing the derived data in the organiser</li>
  <li>Cleaning the project</li>
  <li>Installing both Xcode 4 Gold Master and Final versions</li>
  </ul>
  
  <p><strong>Update</strong></p>
  
  <ul>
  <li>This bug has <em>not</em> been resolved in Xcode 4.0.1. </li>
  </ul>