Support for YITH Product Bundle with Product Import Export for WooCommerce by Xadapter

functions.php

add_filter('woocommerce_csv_product_post_columns','woocommerce_csv_product_post_columns',1);

function woocommerce_csv_product_post_columns($default_post_columns=array()){
    $default_post_columns['_yith_wcpb_bundle_data'] = 'meta:_yith_wcpb_bundle_data'; 
    return $default_post_columns;
}

add_filter('hf_woocommerce_csv_product_import_allowed_product_types', 'hf_woocommerce_csv_product_import_allowed_product_types', 1);

function hf_woocommerce_csv_product_import_allowed_product_types($allowed_product_types = array()) {
    if (class_exists('YITH_WCPB')) {
        $yith_bundle = get_term_by('slug', 'yith_bundle', 'product_type');
        if ($yith_bundle) {
            $allowed_product_types['yith_bundle'] = $yith_bundle->term_id;
        }
    }
    return $allowed_product_types;
}