Is it true that when your order is filled under IDEAL, that is an indication your counterparty is IB? (I was told by customer service that you can only tell which exchange your order is filled at, but the exchange will not tell you with which MM--however, you can still identify when IB is your counterparty--he said it can somehow be seen from the statements?? but meanwhile I thought someone else said on this board that "IDEAL" says it all; is that true?)