title: How can you edit a USDZ mesh that has been included in AR project?
body: <p>How can you edit a <code>usdz</code> file and maintain the rigs that have been set inside of it? For example, I am trying to edit the robot.usdz mesh included in this example project - </p>
  
  <p><a href="https://developer.apple.com/documentation/arkit/capturing_body_motion_in_3d" rel="nofollow noreferrer">https://developer.apple.com/documentation/arkit/capturing_body_motion_in_3d</a></p>
  
  <p>The robot.usdz file is included in the character folder.</p>
  
  <p>I have tried the following:</p>
  
  <ol>
  <li>Convert usdz > scn > dae using scntool. However the scntool fails to successfully convert the file</li>
  <li>Convert usdz > stl file using ModelIO. The STL file loses all joints and does not include the geometry </li>
  <li>Try adding a node to the SCN file > convert back to usdz. The robot character fails to load via RealityKit</li>
  <li>Tried using the Unity usdz package manager. Did not have much success here and was not able to edit the actual geometry </li>
  </ol>
  
  <p>Do you have a recommended pipeline for editing the actual mesh for a usdz file? I do not have an original dae or fbx or gtlf file. </p>