The planned dates will not change as everyone has mentioned, but your projected start and completion dates will change and show you what will most likely happen now that a task is finished early (or possibly late). The other consideration, is that when a task is completed early, the next dependent task will show up in a users "Ready to Start" task list even if the planned start date is in the future. Essentially, if someone get's their task done early, they are giving the next task assignee a longer duration. If you want to adjust the plan, you'll need to follow the advice of the other comments in this thread and manually adjust the planned date to reflect the actual completion date to adjust the entire project timeline below. Admin User isaac.etter@workfront.com