OIC Integration with Payables - too many invoices!!

We have integrated OIC with Payables for commission payments to agents. We try to hold off on worksheet and payrun creation until all processes have been completed, but this is not always possible or practical. We submit Calcuation multiple times due to additional (late) manual transactions and requirements to calculate and pay VAT to agents.

When Re-Calculation is required after worksheets have been created, standard Oracle functionality creates payment transactions to (1) reverse the current record, then (2) create a new payment transaction with the re-calcuated amount. This results in multiple payment transaction records which are interfaced to Payables, each of which creates an invoice. We have strong objections from our users who must identify multiple positive and negative invoice transactions before consolidation into a single payment per agent.