From the volumevelocityfromsurface node I'm trying to figure out how to use animation geometry to control curves.

You have
Geo 1 = physical geography for hair - this creates curves with the volumevelocityfromsurface button.
Geo 2 = hair grows from this surface


Geo 1 although moving independently does not update the curves
  Geo 2 can deform as expected with deformation button.

Is the thought I incorrect or impossible to perform?