Inactive Tasks

Introducing Inactive Tasks in Project 2010 Inactive Tasks is a powerful new feature in Microsoft Project 2010 Professional that allows you to cut tasks in your projects, while maintaining a record of these cut items. Inactive Tasks allows you to quickly and effectively:
· Manage Scope: As project begins to go over budget or over schedule, inactive tasks should be used to manage the scope of the project and retain a record of the tasks that you cut. Later, if there becomes additional funding or more time, you can re-activate some of the inactive tasks to fill the remainder of the budget or schedule
· Perform What-if Analysis: You may want to experiment with different combinations of adds or cuts to your project. Inactive Tasks gives you the ability to quickly test multiple options by temporarily inactivating certain parts of the project without losing the original data.
How to Inactivate a Task
There are several ways to inactivate a task:
· In the Tasks tab of the Ribbon, click Inactivate
Refer blogs.msdn.com for further details on Inactive Tasks