mi-skip-free-edd-orders.php

<?php 

add_filter( 'monsterinsights_ecommerce_do_transaction_skip_ga', 'monsterinsights_support_edd_skip_do_transaction', 10, 2 );
function monsterinsights_support_edd_skip_do_transaction( $skip, $payment_id ) {
	
	if ( !class_exists('Easy_Digital_Downloads') ) {
		return;
	}
	
	$payment      = new EDD_Payment( $payment_id );
	$payment_meta  = edd_get_payment_meta( $payment_id );
	
	$cart_contents = $payment_meta['cart_details'];
	
	$do_not_track = edd_get_payment_amount( $payment_id ) == 0;
	
	if ( $do_not_track ) { 
		return true;
	}
	return $skip;
}