It was just a few months ago that CX changed their policy about miles to waitlist. It used to be that you could waitlist, and then transfer in the miles when it cleared. Now you will be prevented from trying to book a waitlist unless you have at least 70% of the required miles. So my thinking was that if a redemption was made you'd need the miles for that, AND you'd need the additional miles in order to do an ADDITIONAL waitlist. I did speculate it could be done by calling it; I just wasn't sure. I know it can't be done online.

I probably shouldn't have chimed-in.

I almost never call in to do anything; I do it all online. And I know Diamonds get a lot better treatment. :-)