I've checked my credit card account and confirmed that the account fee had been deducted from my account on usual date like last year. And the cashback rewards was also topped up on my account. The account fee was a reduced one compare to the previous card and the rewards was a total amount of money including the new card.
I was a bit nervous as the account number and card number were changed so there might be a hiccup of shifting process which is not unusual in this country. Anyway everything seems fine. So far so good.