Nier Automata, passage 2, starting level?

With the game Nier Automata (ps4) you can play 3 rounds. If you have the first with 2B you can start the second with 9S. Now the question: Start 9S again at Lv1 or take over the experience level of 2B (currently 36)

The level, the weapons, the logs, the chips and the items are taken over.

Thanks alot