Clearing out Random Events for new unit

I would like to have an easy way to remove all my Random Events so I can import my new random events. I create a template class for each unit I teach....like Egypt and Greece. In these classes I create custom Random Events. The only way to add these into my current class is to delete all of my old events and then import the new ones. This is a tedious task of clicking the edit button and then clicking delete for 30+ events. There has to be a better way.

Thanks