An market process internal to a platform is configured to operate with a market external to the platform. Generally, the market process first attempts to reflect an order related action at the external market, and if successful, internally commits the order related action. In some situations, such as when trading becomes fast or when the external market expects to have control over all orders posted thereat, the market process acts as a router for orders received from trading processes on the platform. When the external market elects to return to the try-commit operational protocol, the order file of the market process is resynchronized with the order file of the external market.