I created Sales Receipts with product/service that were previously mapped to Sales.  I've changed the product/service item to map to Commission Income but the previously created Sales Receipts are still showing up in Sales instead of Commission Income even after I edit them and re-enter the item.  If I create a brand new Receipts, it maps correctly.  I do not want to have to go back and delete then re-enter all the Sales Receipts.  Is there an easy fix for this?