Select this option exclusively for backwards compatibility with ILIAS 3.9 and older versions: When this option is selected, the filename of a downloaded file is equal to the filename that was used for uploading the file into ILIAS. If this option is not selected, the filename of a downloaded file is equal to the title of the file object in ILIAS. This option does not affect WebDAV. For WebDAV the filename of a downloaded file is always equal to the title of the file object.