Hiya,

Just to add to the 'data' on this thread.

Requested a status match or challenge through the Marriott Rewards customer service form on their website 2 days ago and got a reply today. (hh diamond)

Result was gold status until July, with the challenge of staying 12 nights before July, in order to retain gold until Feb. If challenge is failed the status reverts back to original (of nothing).

Offered no proof of hhonors status or history however already have 8 nights booked into their system.

It seems to be pretty random through their email system as well as by phone. Good luck!