I have created tree shadows for tree points that scale in real world unit sizes according to the height of the tree:

So if the tree height is increased in the attributes, the shadow size increases to match. The shadow is an SVG symbol assigned to a point feature class.
I would like to export this to CAD, so will need to convert these symbols to features so that they draw in CAD.
I had planned to use "Features to Graphics" and then reverse this using "Graphics to Features", thinking that the first step would create polygon graphics and I could then capture these as polygon feature classes in the second step. But the graphic is simply a point symbol again.
Is there a way to capture the exact shape of the point symbols as polygon features?