I’d make a complete backup of your files and set it aside safely before trying accept all changes. I find track changes unpredictable and so avoid it. I’d make two backups just to be sure one was safe.

Put the titles on the page but in a white or paper color font. Style with style used for the table of contents. Then just create TOC as you would normally. Page numbers will always be right. Or you could “hide” the title underneath the pdf if you are placing it as an image.

When I have this problem it is because the style set for the next word/paragraph calls for it to start on the next page.