How to assign latitude & longitude to a photo "Location" in Photos 6?
Maybe the location is stored but not displayed.  You can open Photos and click on the photo of interest. Then from the menu bar click on View and about halfway down the menu the is a metadata line. Click on metadata and at the bottom of the displayed list is location. Make sure the location is checked.  Then go to the Window menu and click on info.  The location should be shown.