If your pasted content includes section breaks then it will introduce different page setups into your document (along with styles). Without seeing your before and after docs it is hard to give you focused info on how to fix it but pasting in as anything other than plain text can introduce inconsistent formats if you don't pay attention.

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Andrew Lockton
Chrysalis Design, Melbourne Australia

That's what I've been doing all over the place. The question is, is there a way to fix it all at once?

Cheers Don