How to record refund from supplier in newer version of manager?

But I dont want to change my quantity. Quantity is same only inventory on hand value need to decrease.

i have done the same what @lubos said but newer version not allowing the 0 in Qty column . If I write 0 in Qty column, amount column is also getting 0.

https://forum.manager.io/t/refund-from-supplier/2572