If the selected link is currently in an “edit in place” operation, this option is not enabled.
Unembedding the file restores management operations to the link.
However, files that are pasted from a website in Internet Explorer do not display in this panel.
A slightly different version of the Modified icon appears when a graphic is modified and one or more instances are updated while others are not.
The graphic is no longer in the location from which it was imported, although it may still exist somewhere.
If a linked object does not appear on a specific document page, the following codes indicate where the object appears: PB (pasteboard), MP (master page), OV (overset text), and HT (hidden text).
You can display additional categories, such as Creation Date and Layer, in the Links panel to display more information about the graphics.
For each category, you can determine whether the information appears as a column in the Links panel and in the Link Info section at the bottom of the Links panel.