Update to this:
I just spent time on the phone with an Amex rep and went through each charge line by line. Surprisingly the two properties that always cause me problems with Chase (Courtyard Changfeng Park and Shanghai Marriott Hotel Riverside) coded properly and gave me the 6 X points. The Plaza Seoul did not code properly nor did the Marriott Park Hotel Rome. She also said no deduction for the $300 statement credit so I am missing the full 3470 points. She said they would work on it from their end and also contact the SPG team (which I guess still exists).