Using change highlighting in Project 2007

Project provides a very good feature of viewing change highlighting. This feature is very handy during the initial planning phase as well as during execution.
With this feature enabled, you can visually see how any change you make affects other project tasks.

Even though this feature presents nice way to see the effect of changes on other project tasks, it is temporary. As soon as you save the project file or make another change, the original change highlighting is removed and replaced with new set of changes.

Use View -> Hide/Show Change Highlighting option to turn this feature off/on.