wc-import-fix-2022-10-05.php

<?php
declare(strict_types=1);
/**
 * Plugin Name: WooCommerce Import Fix 2022-10-05
 * Description: Fixes importing variable product drafts.
 */

add_filter('woocommerce_product_importer_formatting_callbacks', function (array $callbacks, \WC_Product_Importer $importer) {
    $key = array_search('published', $importer->get_mapped_keys());
    if (false !== $key && isset($callbacks[$key])){
        $original = $callbacks[$key];
        $callbacks[$key] = fn($value) => (int)$original($value);
    }
    return $callbacks;
}, PHP_INT_MAX, 2);