If a backtest is completed, and the search parameters/sort is modified, the backtest is not enabled to be re-run (Finish and Rerun). Some change must be made to the backtest parms, or a complete BT copy must be made.

Sometimes, I am able to manually re-run to the start date, then push the Run To bar to the end date. This tends to produce execution failure messages.

It seems that a back test defintion would know the last update timestamp of its currently selected search, and treat that as a re-runnable change.

Other than that, a brute-force Rerun command would do the trick.