Duplicate Invoice/Bills

Hello, just wanted to ask how duplicate invoice/bills are being used? Is it just literally a copy of the original invoice/bill or... if I try to duplicate an invoice, the quantity of the item/s will be subtracted? Thank you

<p>Hello, just wanted to ask how duplicate invoice/bills are being used? Is it just literally a copy of the original invoice/bill or... if I try to duplicate an invoice, the quantity of the item/s will be subtracted? Thank you</p>

Yes, it's a copy of the original. BTW, you can try these yourself.

<p>Yes, it's a copy of the original. BTW, you can try these yourself.</p>