I'm questioning this because you obviously can't paper copy the imported keys in the wallet.
yes you can. "Backup Individual Keys".
You are right, I was unclear. What I meant was that the imported keys are not included in the paper copy of the wallet.
If I make a paper copy of only the imported keys, is it possible to not have it send some to a newly generated address when sending transactions? I've noticed when I send an amount, some end up in a new address in the wallet - but this is maybe only for very small transactions (<1 btc?)?