BG status IP2 will be changed once officer starts reviewing / made some decision on your file. I think during your eligibility assessment agent at CIO might looking some more information about your work experience / education etc and that might be the reason for asking to you to submit CV. Since you already submitted the necessary documents to them, they may finalize their assessment now and move your file to LVO for final decision. Till then,BG will be NA only. Once you see BG as IP2, then you can safely assume that PPR may come to you at any time.
Almost there... Good luck