No, it's not possible. When selecting an item-level discount, the wizard will prompt the user to add the selected item/ items during the process. Even if these items are already in their cart, the discount won't apply automatically to the existing ...
How will the customer know which item is discounted in the cart page? The discount item price will be struck and changed to new price How can customers identify the discounted item within their cart? Discounted items on the cart page will be clearly ...
This option is only available when setting up item-based discounts and some restrictions will apply. Please see item-based discounts for more information.