Delete Historical Data

[sub5mango]

I'd like to remove the data on ES 0908 prior to 13 june.

I do it via the historical data delete function.

But when I reconnect to zenfire it reappears on my charts.

I would like to build a merged data set of ES 0608 from 14 mar to 12 June, merged with ES 0908 from 13 june rolling forward...I had intended to use the merge function after clearing the front of ES 0908.

Will merge result in a rolling situation?

Do I need to build this data somewhere seperate?

Thanks in advance.

[NinjaTrader_Ray]

That is because your chart reloads this data since your days back is farther back than June 13th. No need to clean out the front of 09-08. Merged data will replace it.

[sub5mango]

Thank you, sorted.