Dreamweaver can update links to and from a document whenever you move or rename the document within a local site. This feature works best when you store your entire site (or an entire self-contained section of it) on your local disk. Dreamweaver does not change files in the remote folder until you put the local files on or check them in to the remote server.
To make the updating process faster, Dreamweaver can create a cache file in which to store information about all the links in your local folder. The cache file is updated invisibly as you add, change, or delete links on your local site.