title: If a UDID is added to an existing provisioning profile, does the IPA require regeneration?
body: <p>I see a lot of questions that ask how to add a UDID to an existing provisioning profile, but I haven't been able to find any info on whether or not that requires any IPAs using it to be recreated.</p>
  
  <p>So for example if I...</p>
  
  <ol>
  <li>Create an ad-hoc provisioning profile "Internal Testers" with just me in it</li>
  <li>Export an application using that profile and put it up on testflightapp.com</li>
  <li>Add an additional UDID to my "Internal Testers" provisioning profile</li>
  </ol>
  
  <p>Do I need to re-create the IPA? If the UDIDs end up stored inside the IPA, I'd imagine yes. If the UDIDs are stored online and referenced, I'd imagine no. However, no one seems to have any documentation on which way it works.</p>