Family not cutting mutiple objects

A Door or a Window can easily cut multiple objects.
But what about other objects hosted in a Roof, Floor or Ceiling...

Open the Family. Uncut the Void from the Host object.
Ensure that the Family has "Cut With Voids When Loaded" enabled.
Load the Family in your Project.
Now you can manually Cut the Void in this Family with Ceilings, Floors Roofs, just as you like. 
I know it sounds basic. But still good to remember from time to time.

Phasing in a Curtain Wall

You cannot change the Phasing of Mullions / Curtain Panels in a Curtain Wall. 

It is directly related to the Phasing of the Wall as a whole. But…

• Shared Nested Families in a Curtain Panel are a bit slow and remain there old Phasing when the Phasing of the Wall changes…
• You can make Parts of a Wall as a Curtain Panel and change the Phasing.
• And most interesting – you can make an Assembly of Mullions and Curtain Panels. And then change the Phasing of the Assembly!

 Still you cannot swap an existing Panel for a new one. But it is a start.

Change the Phasing of Curtain Panels and Mullions