Hey, for those who aren't quite ready to dump their NAUT, despite the impending delisting from Poloniex, the above suggestion works (Thanks, Ben!). I created an account at https://demo.nxt.org/index.html#
and simply had some NAUT sent to my new account, using as my receiving address as my account address, which is displayed in the top left hand corner of the account page, under the blue "Your Account" and "Switch Account" buttons. I did a test transfer, sending a small quantity of NAUT from Poloniex, and it got to the new account without any problems, and as far as I can tell, for only a minimal fee. I did not have to employ the "Add Asset" tab, or any other special function. Just sent directly from Poloniex to my NXT platform address.
Hope that helps, at least for those who are hopeful of a miraculous recovery and relisting (someday...!) of NAUT on some exchange. By the way, I haven't had a chance to study this NXT platform, but it does look as if you may be able to exchange/trade your moribund NAUT for some other NXT-based asset.