Hi Kcoakley, when you make a change to a schema the promoted fields which appear in the document library change as they are indexed under field number so any change to the order of the fields promoted will result in fields no longer appearing in the library. To fix this relink the documents and if nessecary rebuild the view.
There is also a bug in the rendering under IE 8 in the library so if it's just that then highlight all the text, you may find that the text is there but not displaying until refresh.
I may be wrong on both these counts but I find libraries very quirky at the best of times.