Latest Upgrade has Broken System Sound Recording

I had a great way of recording from my music-score software, then exporting MP3s from Audacity . . . . . . then I made the mistake of upgrading.

Now the the Wasapi / loopback recording method doesn’t work, in mono or stereo.

Why did they fix it? It wasn’t broken! Grrrrrr . . . .

Any suggestions how I can get back to recording system sounds in teh latest version please?