My first ever email to them, i got exactly same reply, i was still in ip1 for 2 weeks. Few days later I went into N2 fir 4 days and then changed to ip2 and additional docs not needed. I also got to know later that my file was sent to ottawa.
Thats a very good thing to see your additional docs change to not needed. Hopefully means you passed eligibility and ip2 should be soon. Keep an eye on your status