Historical data from FXCM on TradingView can be slightly different from FXCM Trading Station. The reason of this is the FXCM API we currently use is capable of sending up to 2 ticks per 1 second, so in case of increased market activity some ticks are not counted, what might result in a slight difference of historical bars on www.tradingview.com vs. historical bars in FXCM Trading Station, where all ticks are displayed. We are working on the possible solution.