No, not anchored in hidden Conditional text.
Tried the .idml export, but ID couldn't open the doc. Crashed repeatedly during open.
Crashed opening the .idml?
Are you on a Mac? If so, post the crash report on Pastebin.com and put a link here.
I posted this problem for a friend, and though she'd like to follow through, she's run out of time to do so. She's leaving on a trip.
Thanks, Peter, for your prompt responses, but for now she'll probably just send the file on to her client. They know about the "mystery" links and don't seem too concerned about them.
Thanks for your help.