Review the whole group first
Replace part of every copied event name and shift all dates by one offset. The live preview shows each original and replacement before you create the new group.
Copy one event, or duplicate a complete group and shift all its dates together.
Replace part of every copied event name and shift all dates by one offset. The live preview shows each original and replacement before you create the new group.

The Duplicate action opens a pre-filled form with the same description, pricing, capacity and settings. Give the copy a new name, change the fields that differ and submit it.
A whole group can also be duplicated. Chobble Tickets can replace text in the copied names and shift every copied date by the same number of days while preserving links within the copied group.
Bulk event management also provides shared listing defaults and group status changes. For another site, use catalogue import and export.