I checked with my RM.tks..guess they changed the payout method? I'll update on the 20th if I received the rest.
"Bonus Interest Payment" credited on the last day of the month is calculated based on Incremental ADB.
For the By Invitation promotion which interest calculation is based on Full ADB, remainder of bonus interest will be credited under tranche 2 by the following month (20th) with narration "Exclusive Bonus Interest".
In my case, the ADB in August is less than July hence no Bonus Interest Payment credited on 31 Aug. However, Exclusive Bonus Interest calculated based on Full ADB will be credited by 20th September.