bom not updating automatically

     Using SW 2015 sp2.1 (x64) and having issues with the drawing BOM (SW table or default) update or regenerate automatically.  The model reference is a multiconfig.  As I change the drawing view config, from which the BOM was created, the table does not update automatically.  The work around to update is to additionally select the configuration in the BOM property manager.

    It now seems (don't recall identical behavior in previous version), that the BOM is not attached to the drawing view!  What am I missing for automatic BOM table updating?

SolidworksDrawings And Detailing