Clear the Complete check box for a component work step or component to remove completion and update the percentage complete and earned man hours.
When you clear the progress on a component in an IWP, rules of progress data is refreshed if it is outdated.
If work steps associated with different components all have the same name (same spelling and capitalization), you can clear progress from that group of work steps at the same time. Select the components, and clear the progress on one of the work steps. The progress on all of the work steps with the same name is cleared.