FWIW, you may want to wait to do anything until Tuesday, 10/24 and upgrade to Sonoma 4.1 from Sonoma 4.0 when it is released. (10/24 is the rumored update release date).  Apple is scheduled to release an update to their initial MacOS Sonoma 4.0 version hopefully this week.  The final release candidate software has been rolled out to developers and public beta testers and It has been reported that 2019 issues MAY have been fixed in Version 4.1.  No one that I have seen has thoroughly tested 2019 with 4.1 as it is not released in final form, but it has been reported throughout this thread that some people running the beta version of 4.1 Sonoma have found it addressed their 2019 problems.  Not sure if all issues were/are fixed as people who are reporting seem to disappear after they get their 2019 working again at least in the short term.  Will not really know for sure until final 4.1 Sonoma software is released, but worth the wait for me.  Intuit has the beta software and, given the issues reported by users on this and other forums, it would be nice to hear them weigh in and see if it fixed the 2019  Mac Desktop problems, even thought "IT IS NO LONGER SUPPORTED".