Well, I have a feeling what I'm trying to do can't be done.  My two groups consist of both positive and negative primitives.  What I was trying to do was shape the first group with the second group.  Since the two intersect at a point where both groups have shaping within their own group, each has to be a mix of positive and negative.

I've since found a way to do what I wanted even if in a more convulated way that I would have had I been able to do what I wanted.  It looks ok and since this isn't anything arty, I'm not going to worry about it.

Thanks for the help y'all. :o)

Susan