How do you make a new album with the same layout as a previous album on Apple Aperture w/o starting all over?

I made a wedding album on aperture and replaced all the pages with custom layouts that I made. How do I use the same layouts for a new album without starting all over? and without simply replacing the pictures from the old album and replacing them with new ones? can i duplicate the file? save as... so there are two separate files? I can't figure it out!