Does anyone here have a clean way of dealing with a larger volume of FedEx invoice accounting on QBO

I have tens of thousands of shipments we are sending through FedEx, and it is very often that invoices in one month may contain a week or two of shipments from another month. My current way of dumping all payments into accrued expenses and JEing them out to P&L is starting to break, as FedEx sometimes refunds shipment charges for certain claims, sometimes sends you a check, or sometimes just CNs invoices after it was already paid.

Does anyone have a cleaner process they are using?