AI Content Editor – Add Images manuell from URL List

Dear, I have question regarding the Feature "AI Generated Featured Image Options" inside the AI Content Editor. When I add a comma-separated URL list (a list with .jpgs), which should be placed as the feature image for each post, the system does select an image from the list for each post. However, it sometimes happens that it uses the same image multiple times for other single post too. How can it be set up so that the system uses each image in the list only once? From other systems, I'm familiar with the practice of deleting the chosen image from the source folder on the server, ensuring that no image is used twice or three times. Thanks John