Added on behalf of Barrels & Drums:

For stacker deals Doc 60s are issue along with Doc 55s. Therefore, doing a regular return on Ollie is not possible as the original invoice has to be marked as delivered at the time of issue a return invoice.

Consider stacker deals as volume buys. Essentially, it’s a discount for on a volume buy but the accounting department needs a separate return invoice on top of the original invoice (instead of receiving one invoice listing the discounts).

So as a result, our order desk receive an order, submit the order and issue a return form right away. Since the order is not yet delivered, a blank invoice is created in most cases but this doesn't allow a refund to be returned to the credit card that was just charged for the order.