Are Qantas bonus status credits still valid on changed flight dates?

Will I retain 50% status credit bonus on previously booked business saver Qantas flight Mel to Sin return if I change flight dates and pay $400 fee?

Thank you for anyone who can answer.

I have changed dates and kept the status bonus as long as it is in the same period.

Same here. I change dates (and destination of the return flight) on a double status credit promotion and kept my bonus.

The changed dates must still be within the promotion period.