The user migration API (https://appleid.apple.com/auth/usermigrationinfo) is inconsistent when we call it with the correct parameters and tokens to retrieve new user subs/emails for users made under a previous Entity before completing an Entity Transfer: 65% of our requests return with no new sub or email and we receive an {'error': 'invalid_request', 'email_verified': False} response back from the API when sending it our transfer subs. 34% of our requests succeed in getting a sub but no new private relay email from the same API with the same parameters- isn't it always supposed to return an email? 1% of our requests successfully responded with a new sub and private relay email. We know it is not from anything in the request expiring because we regenerate the secrets, access_tokens, and transfer subs before making each request. All the other parameters are exactly the same as the successful API calls. I can respond over email with more app/team-specific details or our request code. Thanks!