MT4 Strategy tester problem

 
Hi, 
I have a problem can you help me please.

I have downloaded historical quotes for this month and I import it to the MT4 platform, when I'm looking back on my platform, I see that the quotes is on the mt4 platform but When I'm doing backtesting, the tester use only one day (01/12/2016) even if all the day of this month are on the chart and on the archive.
I used the same time frame.

Thank you for your help
 
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