I'm currently updating a plethora of collateral which all makes use of six or so hyperlinks. These have all been set up on a master page, and applied to each document.
Recently I notice the hyperlinks are all broken when I reopen a document—where they all worked previously. There doesn't seem to be any rhyme or reason. The URLs all just disappear from the panel. The named hyperlink remains, but the URL is just the root "http://"
I've been repopulating the URLs when it happens, but that's getting old.