The same happened to me. I was viewing my recent stay on Monday and my HH points + HH points got switched to HH points + miles. I reselected in MYWAY with a confirmation email returned to me. But when I went back in it got switched back again. Repeated my selection several times with the same result. Called CS and was told they were having system issues and to wait a few hours, which I did. The problem was corrected and has not recurred since, not yet anyway.