The system keeps a copy of each change that you make to a strategy so that you can compare and refer back to it in the future.You can access the previous versions of the strategy by clicking on the link below:
You can see below that The Science Behind Dividends strategy has 139 different versions, with the current version highlighted by the yellow box. You can click on each line to go directly to that strategy / result.
With this many strategies it can be very useful to add a version description each time you run a backtest, allowing you to see easily what the strategy was trying to achieve:
You can get an overview of the changes between each strategy by clicking on the + Changes link, which displays the differences between the current and previous strategy:<.p>