Recording a refund on Return Order that was issued outside of Sterling

Symptom

Steps to reproduce:

1. Create Sales Order (SO) with 2 lines, each line 5 Qty and 2 payment tenders CREDIT_CARD, GIFT_VOUCHER.
   
   
2. Move SO to paid status.
   
   
3. Create a Return order (RO) for the above Sales Order to return 1 Qty.
   
   Sample input xml for creating Return Order-
   
   <Order  BillToKey="2015032411282920709" CreatedAtNode="N" DocumentType="0003" DraftOrderFlag="N" EnterpriseCode="E" OrderNo="R7030" OrderType="" Override="N"
      SellerOrganizationCode="E"  ProcessPaymentOnReturnOrder="Y">
   <OrderLines>
   <OrderLine  OrderedQty="1.0" ShipNode="40" ShipToKey="2015041312395351320" >
   <DerivedFrom OrderLineKey="2015041712062975681" OrderReleaseKey="2015041712222475951" OrderHeaderKey='2015041712062975680' />
   </OrderLine>                              
   </OrderLines>
   <PriceInfo Currency="BP" />
   <PaymentMethods>
   <PaymentMethod  PaymentType="CREDIT_CARD" CreditCardNo="7004"   >
   <PaymentDetails   ChargeType="CHARGE" ProcessedAmount="10" />
   </PaymentMethod>
   </PaymentMethods>
   </Order >
   
   A charge will be opened for $10.
4. Call requestCollection API - new CHARGE opened with – $10 amount.
   
   
5. After executeCollection: second CHARGE (-$10) CLOSED
   
   
6. After requestCollection second time: second CHARGE CHECKED
   Now there are two charges +$10 and -$10.
   
   
7. Create Invoice for Return Order - A new record in yfs_charge_transaction table with charge type as Return is created
   
   
8. After requestCollection: RETURN CHECKED
   
   
9. Run below Query to pull Invoice key linked to this charge transaction key
   
   select * from YFS_INVOICE_COLLECTION where ORDER_INVOICE_KEY='201504171239355576271' order by creates desc;
   
   As a result, No records found, means invoice did not map to any charge transaction Record.