Okay, so now here I have a sales order in my supply company, which has been created from a sales order in the sales company.
This is what happens in the video
So here, I now want to ship this order. I just scroll here, we can see that nothing has been shipped yet. So I just post the shipment, and now the order has been shipped here in the supply company, and if I go to the sales company, and the sales order there; I can see now that the order has been shipped here as well.
So the linked drop-ship order, the purchase order, has been received as well.