Lightroom Classic (12.2.1) on Mac fails to read star rating from LrD

Lightroom Classic (12.2.1, Mac) fails to sync back some (but not all) of the star ratings made in Lightroom CC (6.2, Mac).

Lightroom CC syncs well to the browser-based view of the images, so it seems to me the problem is on the Lightroom Classic side. I have restarted both apps, and Lightroom Classic seemed to pick up only some of the changes to star ratings but not all. 

Is there a way around this issue? 

System details:

• MacBook Pro, Intel Core, macOS Ventura 13.2.1
• Lightroom Classic version 12.2.1
• Lightroom CC version 6.2
• Adobe Camera Raw version 15.2
  
  

The collection is based on .CR2 images loaded into Lightroom Classic, and synced Smart Previews to Lightroom CC.

Best regards,

Erik