Is it possible to get the piers for a deck at floor 1 to show up in the foundation layer (0)?  I'm using HD pro 2016 on a mac.  I created a basic test case with a square house and a matching deck (plan attached). 
  
I following the instructions at this link 
https://www.homedesignersoftware.com/support/article/KB-00353/creating-pad-footings.html 
 
The piers show up nicely in the 3d view but they don't show up as a foundation when I got to layer 0.  I've also tried to add a pier manually but apparently I can't unless there is a wall over it. 
  
Am I just missing something obvious?  Any help would be appreciated.  Thanks, 
  
    Tom MK 
  
HD Pro 2016 - Build 17.3.2.2OSX 
  
  
deck-foundation.plan