Hi, I hope you reported those bugs to them :-)

Today I tried NT7 beta 20, and I would tried to sim trade corn and soybean oil, I was surprise when US session start with a really huge up bar on both, then after some bars I reloaded the historical data and ops the huge bar was the last bar and the others bars went down, so i went on NT 6.5 and all was regular. This happened until the session close when i reloaded the historical data the huge bar disappeared, but the data was anyway wrong, and my trades remained where the huge up bar was. This was very weird. I will look tomorrow again and maybe I will take some shots to post here.

You need to change the NT default settings for the rollover date for ZC. They have wrong rollover dates and not yet rolled to the contract 12-10. This makes up for the offset.

If you do not change the setting, NinjaTrader will roll the contract tomorrow, and often the data is false on rollover date. Will check that myself.

On NT 6.5, 2th ans 4th pics, the data is correct, and I have only used the december contract without rollover, cos thare is more volume than the prev, I checked this on CME site too.

But is your NT 7.0.0.20 set to MergePolicy = MergeBackAdjusted or MergePolicy = DoNotMerge ?