In a Windows domain, users have access to a specific file .mpp project and to update notes on a daily basis in it. Last week from one day period to another, the data is within the cells of the file .the mpp is gone. The icon next to the cage, where, as a rule, shows the notes still exist, however. Is there a possibility that the file may be damaged? Can it be restored? and if so, how do I repair a corrupted microsoft project file ?