Snakecharma is correct.
Anthill is making the assumption that the document was correct. I would suggest that this so-called document is either in error, or was published after the policy changed.
If
VB guys wanted to go to V they had to resign lose all their sick leave and Long Service Leave and start again.
Likewise the Cabin Crew.
That's why many didn't go.
It was made in no uncertain terms that it was two separate operations and no movement was available between the two. It is also quite possible that the Voz Management were telling their guys one thing and the
VB management telling theirs guys another and noone really knew what was going on.
Certainly won't be the first time that's happened in a airline