Original sentence: The 3-door KP61 was the only Starlet ever sold in the US from 1981 to 1984.The Starlet was briefly exported to North America from 1981 to 1984
Edited sentence: The 3-door KP61 was the only Starlet ever sold in the US from 1981 to 1984, and the Toyota Corolla FX replaced it in 1985.The Starlet was briefly exported to North America from 1981 to 1984, when it was replaced by the Corolla FX in Toyota's North American lineup