I ran into this same issue and chatted with support about it. They said it's currently not supported, ugh. The workaround I used was to do a batch import of one of the packages and then I went in to each order and added the second. Thankfully it was only two packages per shipment and not 10.
Thanks! Yes, really hoping that it's a feature in the very near future as it will save us an enormous amount of time. Most of our shipments are multi package anywhere between 2 and 20 boxes so it would be incredibly useful to have this feature. Fingers crossed.
I consistently have this issue as well. It is a gaping hole in the automation process. I wish ShipStation would support this feature.
I have been waiting for this functionality for years! It doesn't seem as though ShipStation is in any hurry to implement it though. Why this isn't a capability I can't even begin to fathom.
We have the same problem! We need to be set up with multiple boxes per product so that the shipping estimate is correct on our website. Otherwise the shipping price shown for the customer buying the product is for one box. Has anyone figured out a work around?
Same here. It really would be an extremely useful action to add.