List of 2012 MRB coupons you can't use

I have searched the boards with no luck, so I am hoping someone can help. While planning my December trip I was going through my MRB coups and saw many that may not work because of closings, ownership changes, etc. . .
Does anyone know of a posted list that shows which ones we can no longer use? I am thinking in particular of Aliante, IP, Fitz and the Palms 50%, which I regularly use at the Garndunos there.
Any help would be appreciated.
I have to say, over the many years that I have been with LVA, this marks the most changes on coupon properties that I have seen during one year, as far as the MRBs are concerned.

Typically a name change does not invalidate a coupon. For example, the Fitz coupons are all still good at The D.

Thanks

Are you saying the Palms 50% off isn't accepted anymore?

Yes, jhawkgirl, the ones for Fitz are definitely good at the D. I used one of them (the Blackjack one on my trip in November), the other one I was told that I could use until the end of the year -- they didn't let me use it because I was a new member and that had a better deal than the MRB coupon. They said that the $5 in Freeplay for each 50 points earned was only for current members and not new members and it was still good for me to use (if I came back on a separate trip) until the end of what is now this month (December).

RecVPPlayer