With Project Manager Pro, users can copy a copy and archive task lists.
When a task list is duplicated, all tasks under that list will also be copied.
To archive a task, click on the Archive icon on the top far right of a task list.
To access all archived lists, click on the Archived List View icon located at the top right of the screen.
Clicking on this icon will take you to a new page where you can view all archived task lists.
You can restore or delete a task list also. But you cannot make edits while it is archived.
You can only view the tasks inside archived task lists. In order to make edits you have to restore the list.