Where in MediaMonkey is the Artwork wrong?

When you update the Artwork do you apply it to all files on the Album? Otherwise in some places like the Filelisting it will show one Artwork for the Album so it may be showing the Artwork for a different file on the Album.

In some cases MediaMonkey shows a wrong picture of an album. When I open the menue "properties" the field with the pictures is empty. Then I copy a album picture from amazon and past it, but MediaMonkey still show the old picture. When I click with the mouse on the picture an say "Show Size" I see the correct picture.

Can anyone help me?