1. Go to Control > Query
2. Click New and select Contacts Query
3. Expand Contacts > Interactions > Activities
4. Click Event Name > Add
5. Event Name Is one of Old Event 1, Old Event 2, Old Event 3
6. Click Ok
7. Click Not (Blue Button in lower right hand corner)
8. Click Event Name > Add
9. Event Name New Event
10. Click Next
11. Choose your output fields and click Next
12. Choose the order of your output fields and click Finish