In my store all customers are guest, when a customer add a product to cart a quotes is created, but sometimes it uses an already created quote, so my question is: how Magento decides when to use an already created quote or create a new one?
This is becasue i changed the coupon logic, and i increment/decrement the coupon usage when the customer enters/removes the coupon in the first step of the cart (a plugin to MagentoCheckoutControllerCartCouponPost) an i need to handle the scenario when a customer enters a coupon and leaves the cart abandoned, so i figuring how to look for this abandoned carts and if they have coupons to return the usage.
