Remove UFW chains

remove_ufw_chains.sh

#!/bin/bash

for ufw in `iptables -L | grep 'Chain ufw' | awk '{ print $2 }'`; do iptables -F $ufw; done

for ufw in `iptables -L | grep 'Chain ufw' | awk '{ print $2 }'`; do
  iptables -D INPUT -j $ufw
  iptables -D FORWARD -j $ufw
  iptables -D OUTPUT -j $ufw
done

for ufw in `iptables -L | grep 'Chain ufw' | awk '{ print $2 }'`; do iptables -X $ufw; done

If you delete some rules e.g. iptables -D INPUT -j $ufw
how do I get UFW to remember the changes on reboot? What command do I send to UFW?