DROP ship use in v2012

SOLVED

I need to understand how the DropShip process works in Sage300 for a customer moving from Sage PRO.  I can't find any documentation when I search the help file and don't know where else to look.

They create the PO from the SO using create PO, check the drop ship box, so that much seems to be clear.  But the question is what is meant to happen when the PO is received.  In PRO it creates the customer's invoice.  When we tested this in the new one, nothing seemed to have happened.

I don't know if it is procedure on our part or a lack of understanding on how the Drop Ship should work.  Would appreciate any/all help!