There is a recent discussion, or two, of this topic. Most of the time, you will get to keep your Hilton honors points. BUT, it depends on how the manager does the reversal.
I have done six recent hotel shops recently, with reversal, and have kept my Hilton and Marriott Rewards pionts for all.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.