Which of the following can "unmatch" prospects?

A user edits a running and non-repeating engagement studio program by pausing it and adding a new Send Email step at the beginning of the program.
Which prospects will process through the new step once the program is started again?

How long does it take a drip program to start after unpausing it?

How can you send an automated email to a prospect after they fill out a form?

When prospects register via a Pardot form, they will still receive GoToWebinar's reminder and registration emails.