Wrong weight in credit memo request created with reference to invoice

Hi,

I have a problem with the weight in the credit (qty/value) memo request created in reference to the invoice.

Here are the steps that I do:

- from VA01 I create the order in reference to the initial invoice

- I choose to select the items from the invoice

- in the screen where the items are shown the quantity on every item is open and I can edit it and I change the quantity to 1 (for example if I have in the invoice 10 pieces I modify the quantity to 1 piece)

- then if I go in the order and check the weight, the weigh is for the entire quantity from the invoice and not from 1 item

Is this a standard SAP bug? I don't have something custom in the copy control.

Thanks