I am new to automated system development and have a question which I hope is not too obvious.
I am backtesting using NT a system using the ES Futures contract. The data is coming from my broker (IB) and is from 1/2/12 to present (about 1 year). Is the data a merging of each quarterly contract to form a continuous contract or is it all coming from the current contract (3/13)?
It would seem to me that if it is all from the current contract then the earlier data will not be very good.