I have an assembly that I have done a Pack and Go and am modifying it for another project.  I am now in the drawing phase and one nice thing is that all the drawings came along for the ride, down side is that some of the proprieties are still named incorrectly to the previous project and are populating the BOMs and some notes with old info.  No problem, just have to go and update the source... but I can't find the source.

Here is where I have looked.  In the part file:  In the expanding bar on the right side under the "Custom Properties" tab, and the File - Properties - and all three tabs there (Summary, Custom, Configuration Specific).  And in the assembly in the same locations.  None of these locations held the property that I am looking for (name of the property that I am looking for is PART NUMBER).  Any idea where SolidWorks could be hiding this property?

Thanks.