Every time I add a page to my documents, my buttons reset. How can I prevent this from happening?

I am using InDesign CS5. I have a very large document (698 pages) that has several buttons saved on each page.

I used the automated Table of Contents feature to create all of the destinations. Using the buttons dialog box, I select the specific page the document needs to go to.

I need to add pages to this document, but every time I add a page, all of the bookmarks default to the very first link in the list. How can I get prevent this from happening?

If I can't stop this from happening because I used the TOC feature to create the destinations, how can I quickly and easily move forward to add pages to the document. These pages will be inserted throughout the document.

Thank you.