I am having issues with this. I upgraded to Big Sur, and I can go into Desktop & Screen Saver and I can select the macOS, Catalina, Mojave, and the Solar Gradients under Dynamic Desktops - when I select macOS, I get the Big Sur aerial picture - that works fine.
However, the other macOS (the Abstract Color background) is portrayed under Dynamic Desktop, but when I select it, I get the Catalina dynamic background.
Again the Abstract Color under Desktop Pictures, but when I select macOS Light, it is the right one, but when I select macOS Dark, again it is the Catalina picture.
When I check the folder (/Library/Desktop Pictures) I have a folder named Previous WallPapers, but none of the Big Sur ones are in there... Where are the dynamic desktops located in Big Sur?
What's going on?
However, the other macOS (the Abstract Color background) is portrayed under Dynamic Desktop, but when I select it, I get the Catalina dynamic background.
Again the Abstract Color under Desktop Pictures, but when I select macOS Light, it is the right one, but when I select macOS Dark, again it is the Catalina picture.
When I check the folder (/Library/Desktop Pictures) I have a folder named Previous WallPapers, but none of the Big Sur ones are in there... Where are the dynamic desktops located in Big Sur?
What's going on?