App Transfer to another account (team) - Apple sign in

I have a problem that after the transfer the old users with private email addresses get new email addresses generated upon apple login and I can not connect them to their account in my database.

I read that the account that initiates the transfer should "generate a transfer identifier for each user in their database"

Is it possible to do this and migrate users after the application has already been transferred successfully to another account?

App Transfer to another account (team) - Apple sign in
 
 
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