The initial 12 will be followed by more, possible a grand total of 30 people to move from the SIT...this is just the beginning..
Once the chosen 12 are removed from S.I.T. to Base and the back-filling is complete there, Domestics will need to fill up their shortfall in staff. They appear to run a hefty overtime rate there. Once that shortfall is filled in, Team A380 are going to need more people when the other 2 aircraft arrive later this year.
It appears official that OJK, OJH, OED and another 744 are going to be retired from service, therfore diminishing S.I.T. operations further, because the A380 will be replacing those 4 aircraft. As A380 is not integrated with S.I.T. operations, there won't be the need for those "surplus" 744 engineers at the terminal, so they may be herded over to Base or even A380.
That is where the extra will go. The figure of 12 is n ot final, just the beginning.