title: Renaming Core Data class
body: <p>I have an application that uses CoreData.</p>
  
  <p>I previously had a class named Marker which was linked to the Marker entity in Core Data.</p>
  
  <p>I renamed the Marker class to CoreDataMarker. So I created a new .xcdatamodel file with the new class name for the entity. Then I created a .xcmappingmodel and selected the old and the new .xcdatamodel files and it seemed to 'auto-setup' fine.</p>
  
  <p>However, when I run my application it complains with: "Can't merge models with two different entities named 'Marker'". I understand that this happens, but I have no idea how to solve it.</p>
  
  <p>Do you know how?</p>
  
  <p>Thanks in advance!</p>