Schedule duplication

You can duplicate a schedule to take an existing schedule and add additional work and resources to it while you maintain a copy of the original.

You can duplicate schedules in two ways. Both options are available from the Action menu:
Duplicate Schedule Definition
Duplicates just the schedule information, including the query that was used, calendar information, and other data that you entered on the Schedule tab.
Duplicate Schedule
Duplicates the entire schedule record, including data on the Schedule tab, and changes you made in the Gantt view.