SmartVault only allows you to print a complete tax return or a complete (short or long) organizer to a client vault (portal).  To print a single page(s) you have to print to pdf and upload to their vault (one client at a time). 

I also would love to make the ProSeries tax organizer fillable, but nothing is out there for this.  A generic fillable tax organizer won't have prior year data in there.