We are on v13. We use the customers purchase total for our customer loyalty program and most sales count, but we offer classes and the class purchase doesn't count toward their total for the rewards. We try to ring up classes as a separate transaction but sometimes we forget. Is there any way to change the purchase total for a customer. I know I can export the customer, delete it, change the number in the export and then import the information back in, but I lose the sales history then. Is there another way?