When I edit an order within Shopify to remove a lineitem, the result in ShipStation is that the lineitem qty is changed to zero, but the item is not removed from the order. In V2 I was able to remove that line by splitting the order and then cancelling the resulting order with qty 0. Or, if I re-combined the orders, ShipStation was smart enough to remove the line with qty 0, leaving me with only the lines with a non-zero qty.
In V3 when I split the orders the qty 0 line goes to a new shipment, and when I recombine them it remains in the order.
If I leave them split, and go back to the view where I can see all my orders, I can click on the order with qty 0 and cancel it. This does cancel the order, but the cancelled shipment remains on the order.
If I split the orders like this, then check both of them and click combine, it tells me that the order is already combined.
So basically I have no way to remove this lineitem with qty 0. Please help me figure out a way to do this.