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I think when a system runs with a data2 it only trades during the times BOTH 
data are running. Therefore you will see an extra 15 minutes of trades (after 
4:00 EST) when you run JUST the SP futures (and therefor maybe more trades), 
and no trades after 4:00 EST when SPX is data 2. Also if the start times are 
different for data1 and data 2 (i.e. Bonds/SP) it could totally screw things 
up if the intraday bar closes are at different times for the two datas.
Bill Wynne
SmartTrades.com
 
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