We had an unusual glitch happen.  Hoping someone can help.
 
Our admin entered the receipt through PO receipts.  RNI was cr for $344  and Inventory was dr for $344.  Other than that she can't remember anything about it.
 
If you look at IN-A (Received pos by item #), it shows two receipts on separate dates for the same qty/unit cost.  If you look at IN-E, Inventory trx report, It shows the first receipt for 960 units, then a qty 80 with a negative cost per item of -1.10.  Does this mean that inventory will be netted for 960 at cost per unit less 80 units at the negative cost?  We aren't sure what cost gets used from where, ie the standard cost vs. acutal.
 
We are still learning the flow of DBA, so we're having a bit of trouble understanding what occurred.  Can someone send us in the right direction?
 
Thank you.