Hi, I was selected in Feb and I did claim bonus points for work experience and qualification in LTSSL, but as Zakwan said I think you can claim the bonus points for work experience in a field regardless of IQA result, you just can't claim qualification bonus points. From INZ website is the following:
"Area of absolute skills shortage:
These areas are occupations in which New Zealand has a significant shortage of skilled workers. These are listed on the Long Term Skill Shortage List (LTSSL). You can qualify for points if you can prove that your current employment or offer of employment meets the specifications of the LTSSL and that you are suitably qualified or experienced for the occupation."
As you have experience of occupation on LTSSL, I think you would qualify - you would have to really prove your work experience was relevent / comparable. More experienced members may guide you better or you could contact your nearest NZ Immigration branch to clarify.