How to test iCloud backup/restore with a TestFlight build?

I'd like to be able to test that my app's SQLite database and user generated data is successfully restored in a pre-release build. Is this even possible with iCloud backup or are TestFlight apps ignored?

TestFlight apps do have the data backed up to iCloud. So this can be tested.

How to test iCloud backup/restore with a TestFlight build?
 
 
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