Visio UML Copy package without duplicating objects

[StanKnight0077]

So I have been using Visio for a while and it's great but I finally have broken down into trying to find an answer out.  Every time I duplicate a package it makes duplicate objects in it.  Is there a way of not doing this?  I want to be able to copy the package and all its pages and objects to another file without it resulting in: \package\Class1, Class1, Class2, Class2.

Thanks for any answer of this I hope .  It's been killing me for ages cause lol.