Because the second one, the one that falsely states his is constitutional eligible, was fabricated for his trip out to Hawaii for the hearing on October 24th 2008.
There is no way, IMHO, that these two were signed by those three people on the same day in the same place.
... except that the DNC did the same thing for Kerry and Gore. Two different forms ... signed by the same people on the same day at the DNC convention.