When you change blackberry’s did you use the DM option to do the blackberry swap? I have used it many times and the data from the old BB always is put on the new one. If your trying to just do a restore to the new one using the files from the old BB it wont work. The DM knows which BB the file belongs to.
Read here. same for a PC
KB18776-Back up and restore BlackBerry smartphone data on a Mac computer using BlackBerry Desktop Manager 1.0
For a PC
KB16291-How to use the Device Switch Wizard to switch to a new BlackBerry smartphone