Having read this thread it seems that the 5% cash back is determined by the transaction date. If your transaction date falls on a Sat or Sun then the 5% cash back will be recognized.

What is not so clear is whether the Sat/Sun follows Malaysia or overseas? For example:

1. Transaction done on Sat in Malaysia but it is Fri in USA. Trans date in statement is Sat - I guess will get the 5%.

2. Transaction done on Mon in Malaysia but it is Sun in USA. Trans date in statement is Mon - got 5% cash back?