Partial invoice Inter-company PO line not showing while invoicing


We have created an intercompany PO(10 qty) and 9 qty have been invoiced. When I try to invoice the PO the pending invoice remaining one line not showing while i am selecting Default quantity for lines: Product Receipt quantity. 

If I select "Order Quantity" that remaining one item is showing.

Please find the below screenshot for reference:

Can anyone help to that remain one quantity to show while invoicing process?