E10.1.400.22 Commissions Report missing Advance Billing orders

We had a similar problem in E9 and was given a one off to fix which Epicor says has been integrated into E10.0, but seems to be back in E10.1.400. Anyone else see missing shipment invoices on the commissions report that also has an advance billing invoice ahead of the shipment? As it stands for us, no commissions are reflected if a shipment has had an advanced billing invoice.

Tim