UTM codes and Sticky/Overlays


I’m slow to discovering UTM codes, which are going to be a great help and reduce my need for so many versions of the same form.


If I add the option to pass through URL parameters on a Sticky or Overlay, am I right to assume that it will pass through the parameters from the current URL (landing page or other)?

Is there a way to append that same URL so that I know that the individual clicked on the link in the sticky or overlay instead of the link in the main page?