Thanks Steven. I reversed and closed the sale with no payment. That was easy.
With the one with partial payment, I thought, after I generate the credit, the sale will automatically close and move to credit and returns. Then I would open a new sale and apply the remaining balance to that sale. But when I reversed the sale it was still unmodifyable even if I put current date.
My question is, If I do a roll over to last financial year will it let me modify the sale and allow me to use the partial credit to a new sale for the customer?