Creating a duplicate order is not ideal for bookkeeping purposes (when you have shopify connected to your accounting software).  They just need an option like "Create another shipment for this order".

My orders typically contain many small heavy items, and sometimes it's cheapest to ship an order in two large flat-rate boxes.  I can't even properly ship one of those orders using Shopify.  It's not even an exchange or forgotten item.

That'll throw off the inventory.

I am new to Shopify.. Is this still not fixed?