Dannon Light and Fit Vanilla

How come when I enter the information from the label of the Dannon Light and Fit Vanilla yogurt (I use the giant tub, and measure the 227g), the grade is a B-, but when I search for it on the site, it's given an A (granted, that's for the 6oz cup [and they've upped their calories], but still.. does that have anything to do with it?). It's totally throwing off my daily analysis! Haha.. but seriously, any ideas? 

Okay maybe that was kind of a dumb question... they've changed their recipe and calories, so I guess it would probably change, but from an A to a B-? Sad. :)