Hi,
Did you try setting product merchandising events to solve this? I would set 2 numeric events (item Quantity Added, item Quantity Removed) equals to item quantity added or removed and set it as merchandising event in product string on the cart page each time a unit added and removed.
Checkout Syntax and other details - Implementing a Merchandising Variable
Sample Report:
Product
| Item Quantity Added
| Item Quantity Removed | Unit
| Order |
---|
sku1 | 2 | 0 | 4 | 3 |
sku2 | 0 | 1 | 5 | 2 |
sku3 | 4 | 2 | 6 | 1 |
sku4 | 4 | 2 | 10 | 2 |
Thanks,
Asheesh