I logged on to IB ok, but didn't realise until 2.30 that the YM symbol had disappeared. Was this due to the changes at CBOT over the last few days? I had to re-enter symbol, and the exchange is now ECBOT. Presumably those with browser based TWS didn't get this problem, IB would change it automatically. I've also had to set up a new sierra chart with the new exchange.Does anyone know how I can integrate this with the previous data for the contract quarter
Thanks