envelope publisher planes

I am trying to finally get more familiar with the use of the envelope publisher in order to be able to isolate different subassemblies when working on complex assemblies.

I created a subassembly starting from a bigger one and used the envelope publisher to use some of the parts in the original assembly as reference.

 

As you can see in the attached pictures, when the parts are in the original assembly, front , right and top planes are ok but when in the subassembly they are rotated, which in time makes creation of a proper drawing difficult. If I would try to constrain the parts I use as reference to the standard planes , I get no errors but they are not constraint.

Hopefully someone has been there before and point me in the right direction.