Staying at the Westin's in Houston Galleria area - everything was going great until they switched to the "new" Marriott system. They switched on a Monday night, splitting 3 day stay into a 1 day and 2 day. The Monday stay from the old system posted as usual, but everything after that has not posted. I ended up sending in my stays to my Ambassador to get credit. The issue was, and still is maybe, that the new system was transferring my stay as zero-rev, so the affinity system didn't think I earned any points, or however the two connect.
You know if the systems were issuing double points, or something like that, Marriott would be all over it.