From our friends at Australian Frequent Flyer.
https://www.australianfrequentflyer.com.au/nasty-change-tour…
Looks like the TRS refund loophole used for a long time has been closed since Sep 2021. With International borders opening today I thought it would be timely to read up on the latest rules.
Short version:
If you claimed the TRS refund on the way out you need to pay the GST if you bring the item back in.
Disappointing. Probably very difficult for them to enforce though, I'm quite sure their data matching isn't yet to the point where they check you outgoing refund history when you go through customs on the way back in.