IDKS but I think what the bean counters were trying to tell you is that QB WON'T post to COGS until the unit is sold - NO MATTER what you think you did on the invoice.  I had the same thing going on.  The Pros here are welcome to correct me if I am incorrect.  I had the same issue. 

IN ADDITION:  QB seems to set up it's own Inventory Accounts once you have entered an Item.  I renamed my Inventory Account and when I put in a new Item the a New Account sprang up named just like the old one I renamed.  I ignored it, entered my Items with the account names I set up.  Now that I am doing taxes QB has stuck in another account - Inventory Asset - Other.  It has a Negative balance so I'm trying to figure that out.  I assume that QB doesn't like me naming my own Inventory Accounts and is adjusting for my mistake.  Inventory Asset - Other is running a Negative Balance which sounds wrong.  If any pro can help me I would be obliged, just use small words.