I made a PDF from a four-page InDesign CS6 (version 8.0) document on the Mac (10.9.3), opened the PDF in Acrobat X (Version 10.1.1), tagged and set up the reading order, and ran an Accessibility check. It came back from the client with their changes. I updated the InDesign file with their edits, and exported it as a PDF. Then I went to Tools > Pages > Replace to insert the new pages. But now all of my tagging and reading order setup is completely gone - vanished! I use Replace Pages a lot on plain, static PDFs and also on PDF forms with no problems. Have been looking everywhere for a solution or work-around. If anyone can help, please let me know. Thanks!
Tags are not a separate layer, stuck over the top of the page (like links, for example). The tags become a part of the page content, and cannot be separated from it; nor could it make any sense, since the tagging can refer to single words and characters in the content, and presumably the words and characters have changed. This is why it is important to create the tags as far as possible from the authoring application. InDesign Help | Structuring PDFs
Hi Test Screen,
I guessed as much, thanks for the definitive answer confirming it. Thanks also for the link explaining how to use and add tags in InDesign.