If you can find one... please let us know.
Unfortunately, there is only one undo.
We have a fairly decent configuration process so that each week we're
creating new folders for projects (for those of us who aren't lucky enough to
have MS Project Server). We also make sure we have separate shedules for
each project (yes... some folks create one huge file with all of their
projects schedules in it without using the master schedule /sub schedule
features). That way, when tracking for a given week, if you mess up too bad,
you can copy the prior week's schedule over the messed up one and hopefully
not have too much work to do. Otherwise, attention to detail is king when
working with Project!
Ian