You should send the original and keep a copy for your record. See the post: http://www.canadavisa.com/canada-immigration-discussion-board/buffalo-application-returned-by-the-time-alberta-nomination-deadline-is-passed-t58882.0.html
CIC may or may not return your application. Good luck to you.
what does the guideline , checklist say regarding Nomination certificate in Buffalo ? I am outside Canada , the guidlines regarding the embassy where I live says only copy of the letter and the province already sends the embassy electronic copy .
Orono - You are already in Canada, you do not need to send the Original. Saskatchewan mentioned that I am suppose to send the copy to Buffalo. Read what your Povince said. ON will forward a copy to BFFLO as well.
They require the original copy. I suggest you call immigration right away. Or send the original copy now and write down in the envelope "Additional documents". But call first to be sure. Good luck!