Hello, i have very specific situation with one product.

In use "Add new item to cart method" for Item Addition Method..

In one sale i repeat product with different quantities but total product quantity after sale is substracted only for one item from sale...

Quantity before sale: 170.4kg

Sale: 20.8 kg+ 21.75kg

Quantity after sale: 149.6 kg (170.4 - 20.8)

i provide you photos for better expllanation.

Can you help me pls :(

I can provide you my login details if you need it ..

Thank you.