It is not currently possible to reset a running evaluation. If it turns out that the start of the evaluation period has been set too early, or if the evaluation has to be stopped for other reasons, a reset can currently only be done in the database.

The evaluation operation revert_to_new ("Revert to preparation" in the frontend), which resets the selected evaluation to state new, should be extended to other states. The operation should be allowed for all states from prepared to reviewed (all states except new and published) and should be called reset_to_new ("Reset evaluation" in the frontend).
When performing this operation, the user should be able to select a checkbox (default: checked) on the operation confirmation page to delete previously received answers.
If checked

• all received answers (TextAnswer and TextAnswerCounter) for this evaluation will be deleted, and
• the voters list is cleared.

To prevent unintentional deletion of data, an additional confirmation modal should be displayed if the checkbox for the data to be deleted is set.