Webstie change FB likes and shares folow?

At the moment we're running old website http://sdn.szczecin.pl and shortly we launch new webstie http://sdn.szczecin.pl/nowa. On the old one we use ULTIMATE FACEBOOK and it's fine, but we still want to keep all likes and share statisctics on the new one. All the post addresses and content stays the same, only theme change.
What can you do to keep those data?