Also immigration says, even if you are on bridging visa and your previous visa has not been expired all conditions that is attached to the previous visa is applied to you not bridging conditions. Actually that contradicts my first statement "Apply Bridging visa B to travel overseas". This is a question that must be answered by Dept of Immi. It is confusing.
What I decided was live and work in a regional area and do not travel overseas to make things simple :-)