The article's information pertains to Operating Systems that were not compatible with QuickBooks Desktop for Mac 2021 at the time of its release. Allow me to provide more context, billhdz.
Sonoma is not included in the list because it hasn't been launched when the R13 maintenance release was made available. Specifically, the R13 update was published on March 15, 2023, while Sonoma was only released in September of that year.
In October 2023, a patch made QuickBooks Desktop for Mac 2021 compatible with Sonoma.
You are also correct that you do not need to reactivate QuickBooks Desktop for Mac 2021 since you are using the same computer. The system requires reactivation or registration only if it is installed on a different machine, a clean uninstall and reinstall was performed, or the registration file was deleted.
Allow me to share this article in case you need additional guidance when using the software for your bookkeeping: General preferences for QuickBooks Desktop for Mac.
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