Hello, 

I have an issue on Sales Order. For example, I create Sales Order of 100 quantity of Energy Drink. I invoice 80 of them. And the 20 is left over (back order). I close the Sales Order in that of 20. The problem is that whenever I open the customer's invoice, Quickbooks appears a message that the customer has Sales Order. However, the Sales Order is closed and I don't use that for the customer anymore. I want the Quickbooks does not appear that closed Sales Order, but open. 

How can I solve it? 

Thanks in advance.