Is there a way to not show roof plane lines of a whole house symbol

[SHCanada2]

if I remove the roof plane from the perspective view, prior to creating a symbol of the house, the roof disappears.

 

normally I would not care, but this is an odd roof and I do not actually need the roof correct, as I only need the back of the house correct, but I need to show the entire house in plan view

 

symbol shows like this in plan view:

[Chopsaw]

Edit your 2D cad block in Cad Block Management.