Test Flight does not detect a new build with same version number

Question

I already have a app on testflight with version number say 2.2.1 with permission to 3 users.

I now create another IPA with some minor changes, and upload the same to testflight with the exact same version number ( i cannot change the version# as this is an internal release).

The upload is successful, but it does not add the "#2" to the build version. Because of this the permissions page comes down with the 3 testers already selected.

The problem here now is, click " Update and notify" does not send emails to these 3 testers as they had been already given permissions for the previous build.

Any help on how i can force testflight to detect that this is a new build?

here's the reference for the feature. http://help.testflightapp.com/customer/portal/articles/402778-how-version-numbers-are-set-

Answer 1

I tried Alexey's approach and it did not work for me.

I did get it fixed by going to iTunesConnect: My Apps -> YourAppName -> Prerelease -> Builds

I then turned off the "TestFlight Beta Testing" switch and then turned it back on again.