When I imported the iPhoto library into Photo, I find that the new app does not show the file names of individual files. The old iPhoto does show them (file names like "Danny_birthday1" "Danny_birthday2") but on the new Photo app it says beneath each photo that there's no file name! I'd like to to see file names when I view photos. If iphoto can show them, is there any way to get the new app to do the same? Or do I have to go back to using iPhoto?