V3 no longer calculates the total paid by the customer after combining multiple orders nor does it recalculate the total weight and you cannot ask it to either...it's like the weights for the items in the combined order no longer exist. And so, V3 makes the process of combining multiple orders by a single customer a lengthy process (first hand calculate the weights, make a note, then hand calculate the total paid in shipping, make a note, combine orders and notate to the customer what you did since Shipstation also does not automatically put that information on the packing slip...seriously why doesn't Shipstation automatically put all order numbers involved on the packing slip.
Please automatically combine the orders amounts paid and the weights of all items like in the legacy version and upgrade V3's packing slip to include all order numbers involved.