Thanks Henry, make sense. What happen to the orders that were executed while disconnected and are therefore are in the 'saved' state? They're just treated as cancelled? I just want to confirm that the orders will not be sent again. Also, can you confirm the current open position and open orders will...

I am using the .NET SE version with a IB paper trading account, connection is set to use native OCO group in IB. I wanted to test the OCO functionality and whether execution is handled properly in a disconnect. I entered a sell bracket order on ES at 1830.75 with a stop at 1832.5 and target at 1829....