We create PDFs from InDesign files, which I then right click the PDF and "Copy Shared Link" to send to our coworkers and place in a shared file. If we make changes to the InDesign file and resave the PDF with same name and address, the links should remain the same. Right now if we revise the PDF the links are broken and we have to resend new links to everyone and place in the shared files. (We used to use Egynte, and if we made changes to a PDF like this (same name, address) the links would still work - this is a tremendous time saver.)