Dear Apple: Due to the change of company information, we need to migrate the online App from the developer account to the developer account of the new company. We have some questions about the migration process. Please help us answer them. After the new developer account accepts the transferred App, when the online old version of the App uses Apple login authorization, does the unique identifier obtained correspond to the old developer account, or will it become a new identifier corresponding to the new developer account? Does the Apple login user migration API (userMigrationInfo endpoint) provided by Apple have some restrictions on the call volume and call frequency (currently our Apple authorized user level is about 5 million) Thank you

Dear Apple: Due to the change of company information, we need to migrate the online App from the developer account to the developer account of the new company. We have two apps to transfer，bundle id：com.dhgate.DHgateBuyer，com.dhgate.DHgateSeller，old teamId: 6PG7H3L6MA，new teamId: Y2GSG84XX2 According to the Apple login transfer process, we have obtained the user's exchange identifier according to the provided API (https://developer.apple.com/documentation/sign_in_with_apple/transferring_your_apps_and_users_to_another_team/)，and the new team accepted the App transfer（com.dhgate.DHgateSeller）. However, in the process of using the exchange identifier to exchange for the new team identifier according to the API（https://developer.apple.com/documentation/sign_in_with_apple/bringing_new_apps_and_users_into_your_team）, it is found that 40% of users (about 2 million) can succeed, and 60% of users (about 2 million) will report an error（{"error":"invalid_request"}）. Please help to explain the cause or influencing factors of this problem and how to solve it. Thank you.