I have been fighting with Intuit over this for 2 years now as well. As far as I am concerned this is criminal as it directly impacts taxes. We are a small company that has no use for enterprise yet we have thousands of build assemblies that we have to manually go through and update this field to insure that our bottom line is accurate. This feature should be enabled on all versions of the software and not reserved for the most expensive lumped into "advanced inventory settings". This is a common sense setting. TURN IT ON!!!!!