I haven't used that tracker, but if &x3= is an additional subid you can manually change, then use "&x2={target}" instead of keyword.
Target will give you the URLs of the converting websites from the RON campaign. You don't need the keyword anymore because you're running a RON and not a keyword campaign.
If the keyword token you're using doesn't come from Zeropark, then ignore this comment
I had slipped keyword in there, thinking I would need that variable to start a more targeted, keyword campaign. ZP does offer {target}, if memory serves, although I'm not using their postback because I don't know where I'm supposed to put it. I already have the Bevo postback in SI.
Obviously, I still have a lot to learn.