Yes, the coverage would resume if they lower the advice. But nobody knows how long this will take. In the meantime, I'm already overseas and now suddenly have no insurance coverage indefinitely.
This is exactly my situation. And my self-isolation doesn't end for another 10 days, so it would be irresponsible to get on a plane now. But if something was to happen in the meantime, I have no insurance.
Very unfair, but those are the rules and there is nothing I can do about it.
Interestingly, if I was in Italy I would be covered by the
reciprocal health care agreement with Australia. But there is no agreement with Austria.