Yes, the mini cart is in the navigation includes document. It is part of the template and above the content code. I would think, if I ended the session before the navigation include and after the content, it should work. But that doesn't work, because the navigation is above the content.
I am not sure how it was cleared before without erasing the success page. The only change I made was replace the 0,00 with
<?php echo WA_eCart_DisplayMoney($segufix, $segufix->TotalColumn("TotalPrice")); ?>
so that it would use the correct currency symbol when the cart was empty