As of today, everything is OK with my MR account ... my SPG and MR legacy accounts are combined, my status is properly displayed on the website and on the app. my nights and points are combined, and the final missing stay from post 8/18 has just posted. My reservations are showing as well.

Most of things were fixed within the first week, my points and nights have made minor movements over the past week, but that stay took two weeks after I emailed in about it.

While I certainly am surprised at the lack of communication, none of this has been a material problem and its good to have it complete.