The group option adjusts how 'trade' results are grouped. I'd recommend you review the executions tabs under both grouping modes to check the actual order executions which make up your trades.
It is possible to have trades before the From date being listed in your report. NinjaTrader generates reports from the last time you were flat. If a particular instrument was already in the middle of a position at the beginning of the From date, NinjaTrader will report all trades prior to this date up to the point where the position was flat. This will ensure you have a complete picture in terms of your performance on any specific date instead of "jumping" into the middle of a position which may cause inaccurate overall performance.
Comment