History for Strategy Tester

 
How can I add history to the Strategy Tester?
Why do I see different lengths of history in the Strategy Tester, depending on when I log into it?
 
Usualy server supplies a fixed number of bars of history data. So the longer period of the data - the deeper history available. E.g. 1 minute bar history is about 2 weeks long, 5 munutes history is a few month long, etc.

Besides, MT doesn't load all history available automatically. You need to go through it by scrolling the chart backwards in time until all the data is downloaded..

Also the history can be truncated by MT. To keep it deep enough you need to set Tools -> Options -> Charts -> Max bars in history (as well as Max bars in chart) to a bigger value, e.g. 2147483647 (the maximum).

History can be added manually via Tools -> History Center -> Import or Add. The former accepts simple text format file.
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