That was the challenge. The following day was Challenge 2. Also, many disagree that SBD are burned on conversion. Anyway, trading can be very delicate. The best resolution in my opinion is to buy STEEM with $SBD and then trade the STEEM for whatever crypto you want. I just bout 473 Steem for $69 SBD. The Steem is trading now at $1.85 US. You do the math. I'm not advising. I'm not a professional financial advisor. Just relating to you an anomaly I uncovered re $SBD.