title: Maintaining Core Data in Future App Versions
body: <p>I am currently creating an app that requires a large amount of user generated information to be stored in Core Data. When I release a new update of this app, I want to make sure that these users do not lose all of this data.</p>
  
  <p>When I delete my current version from my iPhone, all of the Core Data disappears- will this happen when I create a new update version- does updating cause all of the Core Data to be deleted as the app is replaced? If so, what do I have to do to preserve the data?</p>
  
  <p>I will not be changing my Core Data model between updates, if that changes anything...</p>