The Migration Amendment (Subclass 485 (Temporary Graduate) Visa Replacement Stream and Other Measures) Regulations 2022 (the Regulations) amend the Migration Regulations 1994 (the Migration Regulations) to provide an opportunity for former international students to obtain another Subclass 485 (Temporary Graduate) visa - a kind of temporary work visa granted after study in Australia - in circumstances where they were unable to stay in Australia for the full period of grant of their previous Subclass 485 visa due to COVID-19 international travel restrictions. In particular, the regulations: 

-create a new stream within the Subclass 485 (Temporary Graduate) visa to allow holders of those visas to obtain another Subclass 485 visa if they were unable to stay in Australia for the full period of grant of their previous visa due to the international travel restrictions in force from 1 February 2020 to 14 December 2021. Australia¡¦s borders fully reopened to Subclass 485 visa holders on 15 December 2021;
-make consequential amendments to ensure that holders of the replacement visa can continue to qualify for a further Subclass 485 visa based on residence in regional Australia; and
- make other minor changes to clarify eligibility for the Subclass 485 visa.

Source: Migration-Amendment-sc485-Temp-Grad-Visa-Replacement-Stream-and-other-Measures-Regs-2022.pdf 

and 

Migration-Amendment-sc485-Temp-Grad-Visa-Replacement-Stream-and-other-Measures-Regs-2022-explanatory-statement.pdf