I am using Visio 2010 and I wasn't able to use your tip. You mention pasting whereever you want but the question is: how you can COPY a full page (tab) (without performing select all on all the shapes of the page because as Jenniffe said it doesn't include all the setting etc. of the page) and how to paste it in another file not inside an existing page but as a new page?

Well, I just went through the scenario again and it worked for me. I copied as I indicated in the prior post (right-clicked mid-page) then pasted in a MSWord, PowerPoint and another Visio file. Now, of course I would have to modify those pastings within the documents to fit within the specifications of those files but, the copy & paste worked in all instances.

I do not know what the end result of your need is but, functionally, it works...just need to adjust to your needs.