To change the frequency of this recurring task, Project must reschedule all unstarted occurrences.}To have Project delete ...

{To change the frequency of this recurring task, Project must reschedule all unstarted occurrences.}To have Project delete all current unstarted occurrences of the recurring task and replace them with new occurrences based on the new schedule criteria, click OK.

If you do not want to change the frequency of this recurring task, click Cancel.