CASA are not an easy regulator to deal with. Situation normal it seems, lots of opinions being generated by the new regs. I find EASA clear and if you do have to ask then you get a clear answer. Glad to be away from CASA's interference.
Oh, and a legal entity change or change of ownership is not charged as a NEW approval as some regulators try to do. Made much more sense to set up a business in Europe. I just felt casa were a drain, although individuals in there often do their best. But the system lets them down.