After Effects
When files are imported from the CCC, they are imported as FootageItem.
Files inside a Composition or a Folder will not be displayed inside the link manager.
Illustrator
Local assets cannot be <Linked file> or <Image> since it breaks the link manager.
Photoshop
The files within the link manager are smart objects and cannot be modified if they need to be visible in the link manager.
However, assets within the active document can be manually converted into smart objects to be displayed in the link manager.
Premiere Pro
Files inside a Composition or a Folder will not be displayed inside the link manager.
In Premiere Pro, the sidebar menu has to be closed after saving for it to enable using the link manager and upload.