Wow, that did in my ADD!
I guess I did find it, but it didn't have signage yet.
It sounds like you are talking about the duplex patio homes in what is labeled Red Rock Bluff (scroll down to find it):
Missouri Partners, Inc. - Branson / Tri-Lakes Area Development | PAST PROJECTS
There are other projects in this area, like the Lodges on Indian Point available through Grand Crowne and Cross Creek houses, that are not traditional timeshare resorts, but are available through timeshare channels.
FWIW, there are beaucoup projects like this around Branson right now, and an all-but-non-existent market demand. Something's gotta give.