TYPO3 Core

When using f.e. using an image in a content element's image field, this reference is not tracked by the reference index. Thus the "View Item" information pop up in the file module does not list the usage of that file.

See example

This probably also affects all other types of file usage.

EXT:dam BTW tracks file usage in an own reference table. It might make sense to use the reference index instead.

From the 4.0 release notes:
"References to objects in TYPO3 (pages, content, files, etc.) are often used. If, for example, you have a page of type “shortcut”, this is a reference to an existing page. If you delete the original page, your shortcut is broken. With the new reference index table it is possible to keep track of these references. You can use “info” from the context menu of any object to see if a reference from this object or to this object exists. This means it is now possible to decide if an object can be deleted or not."

http://typo3.org/development/articles/release-notes-40/
(issue imported from #M13981)