function wc_update_340_state() {
	global $wpdb;

	$country_states = array_filter( (array) get_option( 'woocommerce_update_340_states', array() ) );

	if ( empty( $country_states ) ) {
		return false;
	}

	foreach ( $country_states as $country => $states ) {
		foreach ( $states as $old => $new ) {
			$wpdb->query(
				$wpdb->prepare(
					"UPDATE $wpdb->postmeta
					SET meta_value = %s
					WHERE meta_key IN ( '_billing_state', '_shipping_state' )
					AND meta_value = %s",
					$new,
					$old
				)
			);
			$wpdb->update(
				"{$wpdb->prefix}woocommerce_shipping_zone_locations",
				array(
					'location_code' => $country . ':' . $new,
				),
				array(
					'location_code' => $country . ':' . $old,
				)
			);
			$wpdb->update(
				"{$wpdb->prefix}woocommerce_tax_rates",
				array(
					'tax_rate_state' => strtoupper( $new ),
				),
				array(
					'tax_rate_state' => strtoupper( $old ),
				)
			);
			unset( $country_states[ $country ][ $old ] );

			if ( empty( $country_states[ $country ] ) ) {
				unset( $country_states[ $country ] );
			}
			break 2;
		}
	}

	if ( ! empty( $country_states ) ) {
		return update_option( 'woocommerce_update_340_states', $country_states );
	}

	delete_option( 'woocommerce_update_340_states' );

	return false;
}