How to make an accurate BoM with alternate position views?

I am making a drawing of a flexible gate the needs to be shown in 3 different positions.  I have 3 configurations one for each position (Open, closed, folded).  I want the Bill of Materials to display the part count without redundancy but also allow accurate call outs to the alternate positions.  This may be something SolidWorks 2014 just can't do but if anyone has any ideas I would be highly appreciative.  I am currently using SW 2014 but will update to 2015 soon so advice for either will help. Unfortunately everything is proprietary so I can't provide my example.

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