She will show you the way

[Dotzy-kargath]

I guess it depends on how you view Xal the new sentient being and Xal the weapon. Both seem to keep the name

is it really appropriate to still call the dagger xal’atath when xala’tath is not inside it anymore, and something else is?

Sure, why not? The weapon itself is labeled Xal’atath, Blade of the Black Empire.

[Yvenathilm-fenris (Yvenathilm)]

If Xal’atath isn’t inside it anymore you say? You act as if we are certain that the entity that was in it was actually named Xal’atath and not called that ingame out of convenience!

Who knows what the lady in the Blade of the Black Empire is actually named!