Parts not highlighting when selected in the BOM list

On Some of the drawings, selecting the part in BOM list highlights the part in the drawing views, however it seems this feature isn't working in most of the drawings. I was wondering if perhaps there was a setting that could be turned on/off that I'm missing . I find it a handy feature occasionally and would like to getting working on all the drawings I open..

Thanks,

Dave

SolidworksDrawings And Detailing