QBO Advanced is only available for US, UK, and CA region at this time. If you are using QBO HK or Global version, you can buy a 3rd party service to convert data to one of them.
Thank you for posting this here in the Community, @Stoatmonster.
You may have already posted a similar question, and one of our colleagues was able to provide a recommendation to help you upgrade your current subscription to QuickBooks Online Advanced and utilize its features for your business. We'll gladly route you to her response to get you going. Please see the link below:
We appreciate you allowing us to help you with your concerns. We'll be more than happy to help you again if you have any additional QuickBooks-related queries. Feel free to comment or post here again. Take care, and have a nice day!
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