Question: is abhimanyu older than upapandavas?
Answer: Abhimanyu was never elder to the Upapandavas. He was the youngest of the Pandavas' kids. The first 4 Upapandavas were born during Arjuna's 12-year exile, because it is highly unlikely that Draupadi would remain childless for 12 years and then suddenly started popping kids out after Arjuna's return.