Links are static. That is, after defined in the document, they do not update automatically if the target file specified in ...

Links are static.  That is, after defined in the document, they do not update automatically if the target file specified in the link is moved, deleted, or renamed. If a target file is moved or renamed, you will have to update the link information in the file accordingly. If the target file is deleted, you will most likely must remove the link.