And to follow up the previous post for Support. I am not asking you to give me item detail information as it pertains to the filter.

If you could include the 'Subtotal' amount from the header as an option I am thinking that would win the battle. It would appear to me after doing some looking that being able to use the pure subtotal amount (no taxes) and compare that back to the "Order amount" than if they don't match we know there is a backorder on this order.