title: CoreData Light migration Xcode 10 with Objective-C
body: <p>I'm trying to modify my CoreData attributes, and after I did that, I tried to do the light migration, but the log still showing me the error "The model used to open the store is incompatible with the one used to create the store" </p>
  
  <p>What I did:</p>
  
  <ul>
  <li>created a new model version, linked to the pervious one </li>
  <li>Added the new attribute into the new model version</li>
  <li>set the new model as current model </li>
  <li>update AppDelegate.m code</li>
  </ul>
  
  <p>I attached a screenshot for myAppDelegate.m file </p>
  
  <p><a href="https://i.stack.imgur.com/EvmFw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EvmFw.png" alt="enter image description here"></a></p>
  
  <p>am I missing something  here? </p>