I have had a recurring issue for at least 18 months now (and across several updates of Illustrator). I use previews of stock images on drafts of layouts and then when I purchase the chosen image - clicking on the cart icon on the image in the Library panel, completing purchase - the preview image does not updated to a licensed image. I have to go into my account via a web browser, navigate to licensed images, download the file and manually drag it into my library. The cloud icon at the bottom left of the Library panel says it's up to date, but this is never the case. Help!