Desmodont is still where it used to be and Legalox has been moved to the room opposite to Desmodont (map 1 Amaryllis tower).

Ah Puch most likely has been moved to the Lilac tower (where you Escape to), with the other undead NMs, or perhaps Marguerite tower. Dahlia tower didn't seem to have any change whatsoever, other then the GoV book at the entrance (for trials 1-6, as they are all on cardians in this particular tower)