How can this be possible?

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Take a look at the chart. I downloaded data from FXDD's databank and ran the backtests. I had upgraded my MT4 to build 202 and now the back test results are at best GARBAGE. Is this a bug? MetaTrader, please respond.

 
There are difference history on each period in folder /history/BrockerName/... You need remove all files EURUSD*.hst (backup desireable), with the exception of EURUSD1. hst. Then generate other periods with scrypt period converter.mq4 .
And repeat your backtesting. See also Bug? Slippage value missed by 2 pips
 
Rosh,

Thank you for your reply. I will try what you suggested.
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