Copying and moving participants can be used for:

If you have one or more participants who have attended an event and who are going to attend a continuation course.
Then there is a function to copy participants to another registration form and then send them an invoice that they either pay or they can reply to the email with the invoice if they regretted it. anyway.

If a participant has registered for the wrong application form, there is a function about moving the participant between the registration form, but it applies that all fields exist where the participant is moved so that information will not fall away.
If it differs from what you take for information between the application forms, you can enter the new information after the participant has been moved to the correct application form, very flexible.