Song States in the Background Rack

I have the need to be able to control the state of objects in the background rack at the song level. At present I do this by setting up states in the racks held in the Background rack then use song load bindings to send midi messages to bindings in the racks to select rack states.

When looking at State Behaviours for objects in the background rack, the song level checkbox is there but doesn’t actually operate like objects in songs (unless I am doing things incorrectly), hence the need for the solution above.

So the question is, could song level state behaviour be added for the background rack?