OK, now they've jumped 10 years into the future and the body of the terminator that was trying to kill them in 1997 just happened to be laying around in a junkyard?
Ok, say you're investigating a bank robbery. 3 people have locked themselves inside the vault. This guy shows up and walks inside and begins to tear the vault door apart. His head gets blown off and it is revealed to be a robot instead of a man. What happens to the robot? It gets thrown into a junkyard. WTF?
So now the head and body are reunited. But how did the head make it to 2007 if nothing that isn't alive can't go through the time portal?