Same thing happened to me.
I got an email saying I had to reapply and they will be recruiting possibly at the end of this month. The application is in the 'accepting interest' phase at present.
I spoke with a guy that had registered his application a long time ago, and they invited him to one of the assessment centres on the 29th/30th so perhaps they had enough applicants on their database already to fill the positions on those dates.
Regards,
NZ2