On an ECC Option C contract when assessing the amount due and making payments to a Contractor who is forecasting that at Completion their defined cost will be significantly more than the total of the prices, should payments to the Contractor be capped/limited to the total of the prices or should payments of defined cost continue, exceeding the total of the prices, until completion at which point the Contractor's share is calculated and any overpayment is then repaid by the Contractor?
In my experience it seems to be commonly understood that payments stop once defined cost reaches the ToTP although I can't see that the contract explicitly says that.