I have enrolled however have not yet been charged the $19 fee.
My points have not yet been transferred however i will assume this will happen once my April statement is issued as this is the way it works with other direct earn cards.
My 'rewards' page (https://citibank.com.au/AUGCB/ICARD/apps/ripper_home/homepage.do) states that i am enrolled into Qantas direct so as long as the rewards page states that you are in Qantas direct i wouldn't bee worried.