I dont know what is wrong.

I download data from tickstory e.g 2 years. Than i use data export script set Maximum Bars to 500 000. Script export maximum bars 65 000.
I look into History Center of MT4 and see : Database: 65000 / 236991 records.

But when i download 10 years data from dukascopy than i think i have more bars than 65 000. I export again and look exported bars 65000.

When i look into History Center again i checked that my bars on M15 only loaded to 1.1.2017 but i have downloaded 10 years from duka...On H1 it is Ok i get 10 years H1 data..What i am doing wrong here.