Edit Button for Copied Events Not Working

I have been trying to use the Edit Event button on an event and it takes me back to a different page.

I have been copying events - so I suspect this is the issue.

http://www.publicaffairsjobs.com.au

Try the Brainstorming....event in September ...it won't edit and takes you back to the main Learning Centre page.

It has happened on other events I have listed and I've just realised they are all copied events.

Can someone please look at it?

I know last time there were some unintended consequences to copying events - ie the bookings wouldn't work. Can someone please check and confirm that that aspect was fixed?

Many thanks.
Karen