monsterinsights_skip_woo_manual_orders.php

<?php

function monsterinsights_skip_woo_manual_orders( $skip, $order_id ) {
	$order = wc_get_order( $order_id );
	
	if ( $order && $order->is_created_via('admin') ) {
		return true;
	}
	
	return $skip;
}

add_action('monsterinsights_ecommerce_do_transaction_skip_ga', 'monsterinsights_skip_woo_manual_orders', 10, 2);