Yes you do. As long as u have succesfully online reguster your waranty should be fine. You will get 2 yrs warranty.
The issue is just the starting date of warranty. If you can provide the original receipt to them during the warranty claim, your waranty started form the date of purchase on the receipt. But if you dont have the receipt, your waranty started from the date they ship out the phone from the factory, which will be earlier buy months. In other words, shorter waranty period. This happened to me now, my htc is in sis for waranty. Bought the phone in Oct 2011. but since i lost the receipt, warranty started on 1st June 2011. Luckily i have registered online for the 1+1 waranty. So now my phone is still covered till 1st June 2013 (not Oct 2013 as expected).