Ha ha, no, don’t panic … you just need to rethink your workflow! Basically, to restore a record the first thing to do is capture it (i.e. record it) into a file in it’s entirety and save it. Processing takes place as a subsequent step … you’d set up your declicker etc., which you’ll be able to audition in realtime as you play the file with the plugins in the master section, and then render to a new file. That way you keep the original, so you can always go back to it. Especially if you’re new to this, you will want to return to try again as your skills develop. In the same way as an experienced Photoshop user can always spot the “first efforts” of a beginner, you’ll want to redo old restoration jobs in a few months time, so best to save the “pristine” original!