Different unit name translation in different instances

[Andrettin]

In the French translation, there are different translations of unit names in different instances. I specifically refer to dwarvish units.

The translation of the unit name of the Dwarvish Fighter and Dwarvish Steelclad is as follows (respectively):
"Combattant nain"
"Cuirassier nain"
"Seigneur nain"

And yet, their name in the SoF difficulties was translated differently, as:
"Guerrier"
"Homme de fer"

Shouldn't they be "Combattant" and "Cuirassier", if consistency is to be kept?