public static function shipping_zones_save_changes() {
		if ( ! isset( $_POST['wc_shipping_zones_nonce'], $_POST['changes'] ) ) {
			wp_send_json_error( 'missing_fields' );
			wp_die();
		}

		if ( ! wp_verify_nonce( wp_unslash( $_POST['wc_shipping_zones_nonce'] ), 'wc_shipping_zones_nonce' ) ) { // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
			wp_send_json_error( 'bad_nonce' );
			wp_die();
		}

		// Check User Caps.
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			wp_send_json_error( 'missing_capabilities' );
			wp_die();
		}

		$changes = wp_unslash( $_POST['changes'] ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
		foreach ( $changes as $zone_id => $data ) {
			if ( isset( $data['deleted'] ) ) {
				if ( isset( $data['newRow'] ) ) {
					// So the user added and deleted a new row.
					// That's fine, it's not in the database anyways. NEXT!
					continue;
				}
				WC_Shipping_Zones::delete_zone( $zone_id );
				continue;
			}

			$zone_data = array_intersect_key(
				$data,
				array(
					'zone_id'    => 1,
					'zone_order' => 1,
				)
			);

			if ( isset( $zone_data['zone_id'] ) ) {
				$zone = new WC_Shipping_Zone( $zone_data['zone_id'] );

				if ( isset( $zone_data['zone_order'] ) ) {
					$zone->set_zone_order( $zone_data['zone_order'] );
				}

				$zone->save();
			}
		}

		wp_send_json_success(
			array(
				'zones' => WC_Shipping_Zones::get_zones( 'json' ),
			)
		);
	}