A family of Microsoft word processing software products for creating web, email, and print documents.
How are you creating the PDF. If using the Save As PDF facility, after selecting to save in that format, click on the Options button and check the box for Create bookmarks using: and select Word Bookmarks and see if that restores the functionality.
Thanks for the reply, Doug. I saw that checkbox in the options, but it still removes my bookmarked hyperlinks. Other hyperlinks in the document (e.g. email address) remain functional, just not the ones created from a bookmark.