Thanks for your info, Wasabu Tofu!

My case may look a bit weird given your info. The miles that I will like to credit to AM are from flights operated by JAL but booked under CX number. It seems it should be more straightforward as I bought the ticket via CX and all flights are under CX number.

Seems like it is time to work on the missing miles.

Can anyone kindly suggest how long it may take those miles to be credited after mileage form submission?

Thanks a lot for your inputs!