Originally Posted by Jon Maiman

I have called MR in the past to change instruments used for a reward stay (e.g. swap in annual Visa free night certificate or combine other free night certificates and points). They have always been accommodating like they were for you. Even though I generally prefer to do everything via the web, this an instance where the old fashion way making a phone call is the only way to get it done. Glad you were able to get your reservation changed.

--Jon