"OnOrder Items' returning strange numbers

I have been trying to determine why item fields are returning convoluted data, and am wondering if anyone has ever seen this.

For example:

Inventory item ABC- reorder point=19, On hand= 29, Qty Comitted=1, Qty available = 28.  The Qty on Order = -29. 

There are no open (unreceived) purchase orders for this item.  Although, I have found that this item (as well as a whole slew of others with the same problem) may tie back to one PO from arch, but that PO doesn't seem to have issues that I can find (and I looked- a lot).

Case #593385

As a workaround, I tried to recreate a report that would pull ths information manually, so it could be manually typed into the 'Order Items' form.  However, I cannot seem to pull  true value for 'Qty Ordered', it keeps going back to the field in the inventory record, that I know is wrong.