"Attenuateurs" are not removed

When an attenuateur is set on a machine, it is declined on every acoustic box, and every face of each box.

But when the attenuateur is removed from the machine, the attenuators of the boxes & faces are not removed! Each one must be tracked and unboxed one by one, face by face. ( I think this is not new, also used to be the case on 3.10)

--> Proposal : when an attenuateur is removed from a head component, all dependancies should also see their attunateurs removed