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You can copy and move media library files directly in the Media libraries application.
The files have been copied or moved to the selected folder.
Moving files may break your content
When you move a media library file into a different folder and the file is already used on some of your pages (i.e. the file is set as a background image of your home page), the file may become unavailable on the pages that display the file. This can occur if your website does not use permanent media library URLs.
To make the file available again, you need to manually select the file for each page from the new folder.