I got it! $0 for one night in August.

Under the "Reservations" tab it lists my one reservation three times. The first lists my Hilton confirmation # with a "-01", the second lists the Hilton same confirmation # without the "01", and the third says "Confirmation Code - Not yet confirmed".

You have the option to delete any of the three reservations. I learned by doing so, the reservation gets cancelled.

So.....if you leave all three alone, your one reservation is kept. I called both Travelocity, and Hilton HHonors directly, and everything is booked and confirmed for $0!

Thx for catching this Guava