Viewing Configurations History w/eDrawings

I'm  not sure if this is an Epdm question or an eDrawings question, but here goes. Many of our parts have multiple configurations.  Today, I was trying to view a parts history in Epdm to see when a particular configuration was added. However, when the older version opens in eDrawings to be viewed, I can only see the active configuration (I think). I don't see any way to view other configurations in that part nor are they listed anywhere that I can find.  Is there a setting I'm missing or is it not possible to change the current configuration being viewed?

We are using both SW2012 & Epdm 2012.

Thanks,

Steve

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