Conditional rebaptism is not the same as rebaptism as such, which implies that the previous baptism was nothing of the kind and that the second birth it implies had never happened. And the Australian affair - which is one of the most painful church scandals I have ever seen, as bad in its own way as the paedophilia horror, though thankfully not as widespread - just shows how seriously the Catholic Church takes Baptism. Which in turn shows why rebaptism is regarded with horror.