I called them up and told them the website wasnt updating with my NE $50. I had to struggle with them for a bit but the accepted. CAll them up and have them send you a $50 gift card. You were eligible for an upgrade and you should lose the $50 just b/c of a one day sale.
I actually lost my NE2 in november. It was mysteriously replaced with the 30 dollar "loyalty" discount. Funny thing is before that it say specifically if you wait untill november I would get an extra discount, on top of the NE2 so I waited. So that was something I was going to try to "work" out with them when I decided to get a new phone. At bare minimum I want the 50 instead of the 30.