UCOP Cascade Help
While deleting, moving and renaming are all possible actions within Cascade, they should be performed with the utmost caution and only when necessary. These actions affect the structure of your live website and, if done improperly, can lead to broken links, confusing navigation and inaccurate content.
Remove assets from your site.
Move assets between folders within your site, and/or change their system names.
To change the order in which assets within a folder display, see Reordering assets.