Invoice quantity does not match the product receipts quantity and its a partial invoice

I have created a purchase order of quantity 14 and done product receipt for 14. while invoicing I selected all the product receipts and on the invoice line it shows quantity 14. Then I changed the quantity on the invoice line to 10 and invoiced it. The system prompted about the mismatch of the quantity on the product receipts and invoice line which was neglected. The status of the order is not invoiced and I still need to invoice the remaining 4 but all my product receipts are consumed on the last invoice. What is the best/possible solution to do this?