Christina Aguilera "Hurt"

I have a question about the top 40 hit "Hurt" by Christina Aguilera. Does anyone know where it peaked on the AC chart? I use the "All Music Guide" to look at the Billboard Singles peaks. Though it lists several peaks in 2006 when it was released as a single (including a #19 peak on the Hot 100), it says it came back again in 2008 peaking on five US Billboard charts and reaching #7 on the Hot 100. Isn't that an error? I don't recall it having an even bigger American resurgence two years later. And further, it says it never made the "Adult Contemporary" chart in either 2006 or 2008! It's hard to imagine a ballad like this which peaked at least at #19 pop (and possibly #7) not even making the AC charts at all.

This is the page I'm referring to:

http://allmusic.com/artist/christina-aguilera-p357293/charts -awards/billboard-singles

I'm guessing that there was another Aguilera single in 2008 that had these peaks in the US.

But if anyone can tell me its AC peak, it would be much appreciated. Normally this All Music Guide is very good at reporting Billboard peaks, but this is puzzling.

Edited by EdisonLite

Thanks Paul.