My refuelling panel "automatically" closes all refuelling switches. Doesn't yours?
No. Our A320 have the refuel panel mounted in the wing/body fairing, like every other A320 I have seen. (Are there any with wing mounted panels? I have seen it is an option but never seen one)
Closing the refuel panel door does not close the switches, it operates a microswitch that removes power from the refuel system.
The reason to return the switches to off is not to cause trouble on the next refuelling.