Does anybody know if IB would route option orders to CBOE's opening rotation or keep them until open? Obviously IB does not provide market data for the opening session(before opening at 8:30 Central Time). But I'm just wondering if orders placed before that time is routed or kept til open. I asked IB's support but the answer, hopelessly, is that "there's no opening session for options", to which I don't think asking further would be useful.