How do I delete a duplicate return?

[Lengrif4]

I back up my files to a thumb drive and when I opened the thumb drive it copied the duplicate records to Pro Series.

[User FIDO 61]

Make sure you know for sure which one is "the keeper" and delete the other -- unless I'm missing something here?

Lacerte shows little Add a client, Delete a client icons with Plus and Minus signs 

[LosAngeles1420]

l would like to know, how do i delete a duplicate return?