R42565 - One Invoice per shipment on the same DOCO

Hi list,

Every now and again we have an issue with R42565 whereby if we have an order with multiple lines for different items (so different shipments) we can get a joined up/merged invoice for the order.

What we would like is one invoice per shipment on the DOCO

This causes us issues as our customer doesn't like the fact we merge the invoice.

I think this happens if the lines are fulfilled and ready to go at the same time.

Thanks

John