Hello Miles,
Thanks for using our plugins and welcome to the forums!
Great question you posted!
If you don’t need to keep the post IDs the same as before, then what you tried – export csv, then import csv – would be a way to go. You might need to delete the events from your site though.
If you have tickets assigned to events, then this will not be a way to go, as the tickets are connected with the post ID.
You can do the Quick Edit on the Event List view in the backend. It is a bit more cumbersome, but works.
Or you can try directly editing the event titles in the database through phpMyAdmin.
I think the quick edit would be one of the fastest solutions. Tip: after changing the title it’s enough to hit the Enter key, you don’t necessarily need to click the Update button. Bit faster this way.
Does this help?
Andras