Hi FOODY,
Thanks for the post. AccountRight is set to work relatively the same as the legacy AccountRight application. To answer your question, yes you will need to rollover the financial year for you to choose the right financial year in the Online BAS window. Additionally, there is a forum post with a similar question to yours: https://community.myob.com/t5/AccountRight-Accounting-BAS/BAS-financial-year-has-not-updated-in-prepare-BAS-screen-for/td-p/773332
If you require further help or have any other questions, feel free to let us know.
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Thanks,
Genreve