Differentiator does not always put excluded objects underneath the specialised objects of the same nodeId

[VeraPrinsen]

Example:
parentArchetype.txt
childArchetype.txt
grandChild_before_specialising_and_excluding_id7.txt

At our end, id7 is specialised and excluded and the following archetypes are used as input for the Differentiator().differentiate(flatChild, flatParent):
flattenedChild.txt
flattenedParent.txt

Output of the Differentiator().differentiate():
differentiatedChild.txt

Now the ELEMENT[id5.1] and ELEMENT[id7] are excluded before the elements are specialised, resulting in a warning: Object with node id 7 should be specialized before excluding the parent node. I also heard that this warning will in a future update result in a validation error instead.