Australian time zone abbreviations

I recently found this Australian government web page on time zones: <http://www.australia.gov.au/about-australia-13time> And this government web page lists time zone names and abbreviations: <http://www.bom.gov.au/climate/averages/tables/daysavtm.shtml> I have read the notes in the australasia tzdata file. Should the current official time zone abbreviations be used rather than the popular ones? This would be my preference. Perhaps, the older tz abbreviations without the "A" for Australia could be maintained for dates in the past similar to using PWT (Pacific Wartime) for Pacific Time? Thanks, Chuck