We’ve recently made some updates to developers’ beta testing process. Developers will have the opportunity to maintain a list of their invited Beta testers’ email addresses during the testing process. In the past, Beta Testers were invited by a developer via an email address submission. However, whenever the developer made changes to the app and re-submitted a new binary file, the list of invited Beta testers' email addresses was lost and had to be re-entered in the new submission form.
As a result of the new updates that we’ve made, the Beta testers' email addresses will still be there in the new submission form.