title: Update app on iPad that has been removed from registered devices on developer.apple.com
body: <p>I've removed ~40 devices from the iOS device list for developing/testing at the new year. We updated the software on 20 used iPads, and, in the process, our technician successfully updated the app, which surprised me, since I removed those UUIDs 
  from developer.apple.com – can anyone explain why this still works?</p>
  
  <p><br><br>
  Notes:
  I'm using HockeyApp to distribute the app to devices, the app will prompt users to update if there is a newer version on HockeyApp. </p>