Well, I wonder why you are still saying Catalina support is being “fully tested”. This is nearly a year old, now, and we are probably soon going to hear about the successor to Catalina, later this month. It does sound like the QU series, at least, is effectively EOL’d, now. How long does it actually take to validate the DAW control? A year? Really? Given that Catalina has effectively ended support for a number of applications that have mainly 32bit code, and the restrictions on “old” software seem to be getting tighter, a little more work on this would be a good thing, no?