Missing payment information in SerializableCart

Description

When adding a payment to a SerializableCart, after saving and loading, the payment will be SerializablePayment, and all properties are lost.

var payment = orderGroup.CreateCardPayment(_orderGroupFactory);
 
payment.CardType = CardType;
payment.PaymentMethodId = PaymentMethodId;
payment.PaymentMethodName = SystemKeyword;
payment.Amount = amount;
payment.CreditCardNumber = CreditCardNumber;
payment.CreditCardSecurityCode = CreditCardSecurityCode;
payment.ExpirationMonth = ExpirationMonth;
payment.ExpirationYear = ExpirationYear;
payment.Status = PaymentStatus.Pending.ToString();
payment.CustomerName = CreditCardName;
payment.TransactionType = TransactionType.Sale.ToString();
cart.AddPayment(payment, _orderGroupFactory);
 
_orderRepository.Save(cart);

Reported from: http://world.episerver.com/forum/developer-forum/Episerver-Commerce/Thread-Container/2017/10/how-to-make-serializable-carts-to-work-with-icreditcardpayment-authorize.net/