Two bibliographies in one document and I don't know why

Well that is probably a good thing.  – they aren’t fields anymore, they are plain text, but in a format that word should be able to convert back to fields.  – but to completely clean it up (but you will lose tables of contents, etc,. but not header footer stuff like page numbers)  Words tool to clean up all field codes is Ctrl+Shift+F9 (or Ctrl+6 I think).  Try that and then reformat.