It took the Nazis several years to implement the Nuremberg Laws in Germany but when Hitler invaded Austria in March of 1938 they were implemented immediately. The records of Vienna's Jewish Community showed who was a member or had been a member and resigned in order to convert or to have no religious affiliation ("konfessionslos"). As far as I know neither the Catholic nor the Protestant churches would accept a Jewish person for conversion to their faith without written proof that he/she had resigned from the Jewish Community. The impact of this immediate implementation of the Nuremberg Laws was severe.