Dynamics GP 2013 includes enhanced functionality to more easily track serial and lot number items on drop ship orders. If you’re shipping orders from your vendors directly to your customers, this functionality allows you to capture the serial and lot numbers early in the process. This will improve the control and traceability of serialized and lot controlled items.
This is a PowerPoint from Microsoft on this functionality: GP2013 FOD – Track Serial Lot on Drop Ship
Here is a quick video that shows this in action.