Thanks. This happened to me as well, it can be very frustrating to have your bibliography moved up and replace other text when you reformat. It is caused by a rotten link in the text, in my case, the link was invisible for some reason. A quick way to find the rotten link: Reformat. Identify the paragraph before and after the new biblio position to identify the paragraph that contains the rotten link. Now use “see revision history” under file menu to restore to a time point a few minutes ago. Find suspect paragraph. Copy entire paragraph, paste into Word or other notes application. All links will show up as underlined/colored. Now you can go back to your doc, find the link, delete, redo. Worked for me, now biblio shows up at bottom like it should.