Product Variants on Checkout

-- url of the page with the problem -- : www.hosting-webdesign.co.za/index.php/bu...-cards/checkout.html
-- HikaShop version -- : 3.1.1
-- Joomla version -- : 3.7.3
-- PHP version -- : 7
-- Browser(s) name and version -- : Chrome
-- Error-message(debug-mod must be tuned on) -- : Not Applicable

Hi Guys!

I have used Hikashop Essential for an Order Business Cards Page : www.hosting-webdesign.co.za/index.php/bu...-business-cards.html

Please add to Cart so you can see what I am saying....

Now the Product Variants is Displayed on the Checkout Page... This is ok BUT the problem comes in when a user clicks on the Variants and changes the drop down and adds that to Cart.
Hikashop then adds that variant on together with the initially selected Varian to the cart and this is confusing!

So sure if I add 1000 cards I should then pay more, but the other initial 500 Cards still displays and that states FREE....?
No what is it 500 Cards Free and then R200 for 1000...
Guys how can I make this better and make sense?

Thanx Nicolas that worked great!

Just 1 observation... when I delete the product that is now Grouped with the Parent... I gat a green block stating the cart is empty, but no way to go back to buy more... ?