Starting with the Professional Cloud, factro tasks contain a complete task history. This means that even after the task has been completed, it is still possible to see, for example, what planned, actual, and remaining effort was expended, or who worked on which subtasks. In the Basic, Team and Business Cloud only comments and file attachments are saved.
You find the task history within the factro task in the side menu under "History".
With the help of the news filter, you can individually adjust which information you want to be shown during your daily work routine.