I remember that workflow was animatable when i succumbed to the metafever... if you didnt deleted the history the parts must be there on the otliner and must be selectable and movable, as the smooth is down the network it will update. Try frist with booleaning cubes if you put enough cubes is just the workflow used in zbrush... con is that the flow of the resulting mesh is ugly to look at, but for blobs its good enugh... but you better consider the particle way for such things?

(delete just this part if censurable) also i downloaded a beta plugin for true metaballs on Highend3d a loong time ago...