It does get stored but it just doesn't show as being in the silo under stored products. I fixed my copy by taking the needed lines from the V1 placeables grain dryer xml for the associated farm and putting it the V2 xml. I am not sure if this was intended and I know this may not answer your question but wanted to at least let you know it can be stored. If you go to the silo after dumping it should pop up as a selectable output.