Issue with SLA mapping for chargeback transaction

We want to change the SLA mapping for product segment under revenue account for chargeback transaction as the business wants to have the same product segment that is populated in the original transaction in the chargeback transaction as well.

We couldn't use the same/similar mapping set that is used for invoice accounting as the original invoice contain the item and the mapping set was defined to populate the value based on item category code that is seen in the transaction.

Original transaction has item details, but the chargeback was created by the system automatically and there is no item in it to use the similar mapping set for chargeback.