The problem is much worse than i originally thought. On the Sales history report I have entire categories with large negative costs, and others that imply I am selling at a significant loss. Neither of which is true. I believe that the problem is in assemblies though. The costs for all assemblies are being recorded as costs of sales. The component recieves a cost of sale, and the master recieves a negative cost of sale.

Is this a known problem? How do I correct it?