LoadMoreHistory on back testing

The need to use LoadMoreHistory on back testing is very important. Strategies needs past data to run.

The solution to simply run it from an earlier date is not good enough because:

a. It changed the way the strategy looks at past data and it's functionality.

b. There is no way to know how much data was loaded on range charts so every time you need to use trail and error which is exausting.

Thanks