GST Liability

I just updated to the latest version and I suddenly have a GST liability when I haven’t been
registered for GST since 2018. The amount showing was not there until now. Any ideas what has caused this.? I’d really appreciate your help. Thanks.

You need to furnish more information. What actual version number? Did you import the Australian localizations under Settings? Do you have GST tax codes installed?

By the way, the program has no knowledge about whether you are registered for GST. Registered or not, Manager responds to what you enter and how you set it up.