If I burn a Celebi, used Gastro Acid, and it switches out, will the burn be cured??

Question

As the question says:

A Celebi with Natural Cure is burned. Afterwards, a Poke uses Gastro Acid. Celebi switches out. Later, it comes back. Will it be cured?? Would it make a difference for it to be hit with Gastro Acid first, then burned?? What if instead of Gastro Acid, I used Worry Seed??

Thank You in Advance.

Answer 1

The burn would be cured.

Source:Test myself & this guy poisoned a celebi and used Gastro Acid and it was no longer poisoned when it came back in.This is what he said:
>On PO, I hit Celebi with Gastro acid then poison, it switches out and its poison is cured.