The operation to manually initiate a refund has been moved to the product card in the cart. You now have to gently swipe left on the affected product and tap Return to turn the purchase into a refund. This needs to be done per item.
When you scan a receipt or enter a receipt number in the field under Refund > Search for receipt you will be presented with a dialogue window showing you the Order number, Receipt number as well as all the items on that receipt. Check mark all the items the customer wants to return and enter an appropriate Reason Code, then tap Add to Cart.
If you pick a Reason Code configured as a Rebuy you can then initiate a Rebuy refund, see here for more information.
When you perform a validated return and also add a product to the transaction, there will now be a clear distinction between what is a refund and what is a sale.
The cart will now show campaigns and offers on each line in order to present more information on how the applied campaigns affect the product prices.