Why does adding a new product remove the old one from the cart?

Why does adding a new product remove the old one from the cart?

CANVAS1
Visitor
3 0 0

CUSTOMER CANT ADD MORE THEN ONE PRODUCT IF THEY SELECT OTHERONE THE OLD ONE IS VANISH

Replies 3 (3)

Jason
Shopify Partner
11196 226 2287

This is something we'd need to see an example for, replication steps, or any kind of extra details. What are you able to share so others can help you more?

★ I jump on these forums in my free time to help and share some insights. Not looking to be hired, and not looking for work. http://freakdesign.com.au ★

CANVAS1
Visitor
3 0 0

SEE THAT VIDEO 

CANVAS1
Visitor
3 0 0

SEE THIS IM FACING THIS PROBLEM