I had a friend who early in his translator career worked on a series of not very well written YA fantasy novels, and he kept getting into trouble with his edito

I had a friend who early in his translator career worked on a series of not very well written YA fantasy novels, and he kept getting into trouble with his editor for trying to improve the writing. He said that the hardest thing to learn was that if the sentence was badly written and confusing in the original it wasn't his place to fix, but to just translate it.