We have been requesting it for a few years
now.https://community.shipstation.com/t5/Printing-Documents/Add-stock-level-to-packing-slip-or-pick-list/idi-p/4240
This is one of the most annoying things in the new version. We credit
back shipping to customers that overpaid and having to go through them
to make sure it wasn't a combined order is horrible.
Now that Shipstation connect is updated maybe we can finally get the
inventory on the packing slips?? Almost a year worth of "Investigating"
I would think be long enough for a little code change.