Why didn't the movie Left Behind explain what happened to the original Jack and Victoria at the end? They were cloned, but the original body is supposed to still exist, but

The main body appeared and made an explanation, at the end of the road to Titan to drop nuclear weapons, the flight recorder played that mission in 2017, and then 49 recalled the process of going to explore Titan with the second female, the second female also took a picture with the main male, the main male was very embarrassed, and the second female said to keep a memento of it, which also talked about that rugby didn't see it in 2017, and the call is exactly the same as every day when they were instructed by the leader of the Lisa, at that time Lisa appeared behind the scene with the rugby many people. It shows that it's the real Lisa, while the rest as the command appear only Lisa one through the screen command, and 60 years have passed, Lisa is still the same, which shows that Lisa has actually been the image of the aliens. Then the ship has an accident and is going to crash, the main body asks the awakened second female to go to sleep, the second female refuses and wants to maneuver the ship with him, and then the male lead goes to the back and frees the capsule of her wife and others. That's the earliest start of the show, at the ending recollection, after which the male lead and the female second crashed on Titan, after which the DNA was collected. cloning out the wiped out memories of the male lead and the female second went to repair the ship, and it was only 60 years later that the female lead's capsule was recalled by the Earth's signal. In the end, 52 also recalled and found his wife who had a child with 49, and there is only 52 a male lead in this world.