Why didn't Pandorica's restoration field bring back Dalek in the Roman era?

In season 5 finale of Doctor Who, just after Rory freed The Doctor from the Pandorica, The Doctor saw a Dalek's shadow and it was under high intensity light. I just analyzed that portion of the episode and I concluded that that was the light from the Pandorica because the moments before, there was no light there.

Why didn't that light bring that Dalek back into the existence that time?