The Update Progress command displays the Update Progress dialog box where the user can update the completion date of tasks or delay remaining portions of tasks to start on a specified date.
Allows the user to update all the project’s Tasks, or only the Tasks he/she has previously selected in the Gantt spreadsheet.
Allows the user to define how he/she wishes to update the progress:
Set project "As Of Date" to the progress date
Upon selecting this option, the project’s As of Date will be updated to correspond to the specified Progress date.