Wouldn't you be on a 30 June tax year like the other 23 million...

Wouldn't you be on a 30 June tax year like the other 23 million Australians? Still 8 months to go

If they haven't sorted it by May 2018 you could sell your shares via delisted.com.au. I did this for Vocation as the administrators there decided to take several years to get around to telling shareholders they'd lost the lot. Very annoying. Keep an eye on this as the delisted process takes a few weeks, you don't want to miss 30 June cut-off by the sounds of it