@robertramos in my opinion, i don't think your visit-to-work visa situation will affect your application in OZ. unless, of course, if you violated the visa conditions in Africa. but then, i assume na hindi naman, so, i guess, you'll be fine. and about your course of choice, i think, management is ok 'coz you have the relevant experience. besides, you will have the chance to justify it naman in one of the questions in the visa application form. so, make sure na lang na you explain it there the best way you can. hope this helps. 🙂