Code snippet to recalculate the order totals automatically during import - by Webtoffee (Order Import Export for WooCommerce)

functions.php

<?php // Do not copy this line of code
/**
 * Re-enable WooCommerce order total recalculation during WT Import Export order import.
 *
 * This ensures WooCommerce rebuilds the internal tax and totals structure
 * for imported orders so that third-party invoice and reporting plugins
 * display the correct tax labels and subtotal values.
 *
 * @param WC_Order $order The order object being prepared for insertion.
 * @param array    $data  Raw import data.
 *
 * @return WC_Order
 */
add_filter(
	'wt_woocommerce_import_pre_insert_order_object',
	'wt_recalculate_order_totals_during_import',
	10,
	2
);

function wt_recalculate_order_totals_during_import( $order, $data ) {
	if ( ! $order instanceof WC_Order ) {
		return $order;
	}

	$order->calculate_totals();

	return $order;
}