What's the point of this movie's existence?
The story had been told and end with T2, there was no natural way to continue the story unless you did a future war movie, maybe they just made it as an easy buck recognition off of the name which is the motivation most of the time with sequels.
This movie is basically Terminator 2 beat for beat in a family friendly manner.
Most like of the Terminator sequels this was something made that is pointless.