If you have built an agenda and cloned the wrong meeting, you can rebuild the agenda as long as it is in the Draft Agenda stage.
On the Meeting Page, under Agenda click on Rebuild Agenda.
In the pop up box that opens you can choose to select:
Best Practice Template
Clone an Agenda from a previous meeting
Things to Note:
Any documents that were uploaded to the agenda prior to being rebuilt will be removed. (exception being for the Smart Agenda Items: Confirmed Minutes, Interest Register and Action Item List unless they are not listed on the cloned agenda)
You cannot rebuild an agenda once it has been published. The options are too either edit the published agenda or to delete the meeting and begin again.