Hi Luca,
Generally, if you wind up the fund, it will not generally mean that any possible future claim is precluded. Obtain legal advice on that though, to confirm.
That lawyer may send the financial advisor a letter of demand, on receipt of which the advisor will often put the matter in the hands of their professional indemnity insurers - who will often pass it on to solicitors who will often fight the claim very hard.
Another possible option you have is to raise the issue with the advisors (you may already have) and if their response is not satisfactory, a complaint to the Financial Ombudsman Service (
www.fos.gov.au) may be a possibility. Though I don't have a lot of faith in that process.
Obtain or keep handy a copy of the fund's trust deed. Trustees of such funds can sometimes have some legal or practical responsibility for such losses, unfair though it may seem to lose your retirement savings.
Good luck.