As an example, I have no problem adding the current ES contract, of ES 3-20. However, say I want to run charts for the ES 3-19 and 6-19 in playback mode. Through the Tools -> Instruments or New -> Chart -> Data Series, I can find no way to configure or add previous furutre contracts, of say ES 3-19, into a chart. I understand how to add current instruments, but not how to specify past periods of instruments.
Thanks for your help.
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