This is a bit complicated to explain.
About 6 years ago I had played a lot together with my buddy GTA SanAndreas on the PlayStation 2.
Since he had played a lot of story, I copied his score to my memory card. He was just like that on the RC missions of zero.
The strange thing was, however, when I put my disk of GTASA at my house and loaded the game. I suddenly had a score where the game was completely played out. Only the mission "Beat the Cook" was not finished, everything else was done.
This is something I can't explain to this day. Can this be due to different versions of the game?
I hope someone knows about it and can explain it to me.
Probably a bug
The Zero missions were not mandatory. So he could have played through the story without having to do it.
But changing a whole score can't be. Probably a wrong file or memory card copied / inserted.
I copied it myself I was there and saw how far he is. He was not through with the game.