Hi onzekralen,
4. The modifications will be available on the next release.
You can edit it by yourself in HikaShop > Display > Views, edit the view "checkout / notice" and replace:
echo $this->cartClass->displayButton(JText::_('DISPLAY_THE_WISHLIST'),'wishlist',$this->params,hikashop_completeLink('cart&task=showcart&cart_id='.$wishlist_id.'&cart_type='.$cart_type.$this->url_itemid),'window.top.location = \''.hikashop_completeLink('cart&task=showcart&cart_id='.$wishlist_id.'&cart_type='.$cart_type.$this->url_itemid).'\';return false;');
By:
$app =& JFactory::getApplication();
$wishlist_id = $app->getUserState( HIKASHOP_COMPONENT.'.wishlist_id','0');
if($wishlist_id != 0)
echo $this->cartClass->displayButton(JText::_('DISPLAY_THE_WISHLIST'),'wishlist',$this->params,hikashop_completeLink('cart&task=showcart&cart_id='.$wishlist_id.'&cart_type='.$cart_type.$this->url_itemid),'window.top.location = \''.hikashop_completeLink('cart&task=showcart&cart_id='.$wishlist_id.'&cart_type='.$cart_type.$this->url_itemid).'\';return false;');
else
echo $this->cartClass->displayButton(JText::_('DISPLAY_THE_WISHLISTS'),'wishlist',$this->params,hikashop_completeLink('cart&task=showcarts&cart_type='.$cart_type.$this->url_itemid),'window.top.location = \''.hikashop_completeLink('cart&task=showcarts&cart_type='.$cart_type.$this->url_itemid).'\';return false;');