Quote from brownsfan019:
Continuous contracts are only for charting purposes.
There is no actual ES #F contract being traded. That's esignal's, TS, etc. way of giving you the option to use 1 chart for the contract -- HOWEVER actual trades are placed on actual contracts.
So at rollover time, you must liquidate your contract that is expiring and purchase/sell the next contract you want.
Example:
The CL M contract expires today. If you were long/short CL M, you must get out of the position no later than today and purchase/sell CL N contract - even though the entire time your charts may read CL #F.
I mainly focus on oil so easier to use that as an example for me but the idea is the same regardless of what contract being traded. Only difference is how often you have to roll. Oil is monthly, indexes quarterly.