Hello, I'm trying to use variants (I used to create one product for each declination) But I would like to see the declinations regroup at invoicing For exemple : on a sale order I could have 3 lines for 3 sizes of a Tee Shirt reference one piece each and on the invoice I'll get only one line with three pieces of this Tee Shirt reference There is an option for this ? Or a customization to make with Studio ?