The reason James Cameron, and Gale Anne Hurd, aren't involved is that they lost the rights to the Terminator "brand" years ago, in one of Hollywood's Byzantine rights negotiations. As mentioned before, the only reason Cameron has a writing credit is that he created the characters, and has to have a credit, again because of Hollywood's intricate credits system.
As such, this second sequel is minus the original producer (Hurd), original director/screenwriter (Cameron), and one of the original stars (Linda Hamilton, who, as others pointed out, refused the script), and it negates the ending of the previous movie.
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The reason James Cameron, and Gale Anne Hurd, aren't involved is that they lost the rights to the Terminator "brand" years ago, in one of Hollywood's Byzantine rights negotiations. As mentioned before, the only reason Cameron has a writing credit is that he created the characters, and has to have a credit, again because of Hollywood's intricate credits system.
As such, this second sequel is minus the original producer (Hurd), original director/screenwriter (Cameron), and one of the original stars (Linda Hamilton, who, as others pointed out, refused the script), and it negates the ending of the previous movie.