ES 1 min chart for 09_23 vs 12_23 is off by 50 points ! While chart shape is same

[sar315]

If I change instrument from ES 09-23 to ES 12-23 (in both cases it is ES) in 1 min chart, chart shape looks the same, but values are off by 50 points for the same date/time (9/15/2023 09:16:00)
I did click "Reload all historical data"
Attached file contains cutouts of screenshots of both charts.

[NinjaTrader_Manfred]

Hello sar315,

Thank you very much for your post and welcome to the NinjaTrader forums!

The rollover offset of the 12-23 is 49.25. This means that all historical data of the ES 09-23 is offset by 49.25 points when displayed as historical data on the ES 12-23 chart to create a continuous chart.

You may find more information about NinjaTrader's historical merge policy and how to adjust this setting in our HelpGuide below:

https://ninjatrader.com/support/helpGuides/nt8/merge_policy.htm

Please don't hesitate to let me know, should you have any further questions!