When the order has "profileErrorOnLoading=true", the expected behavior is that the customer profile, address, and credit card won't be saved/updated on the Profile System.

The problem is that the checkout is still making some requests to register the buyer's e-mail, naturally, without sending other fields like name and phone. So, if the customer is already registered in the store, these fields are cleared, and the customer data is lost.

We can't simulate the behavior since the "profileErrorOnLoading" is just for unexpected exceptions.

N/A