In lesson 5.7 Indirect Object Prounouns, which by the way I am finding very hard, we are given the sentence “Ils vont livrer des colis à Monsieur Richard” and the negative sentence “Ils ne vont jamais livrer des colis à Monsieur Richard” should the “des” in the negative sentence not be “de”.
In lesson 4.5 it says that partitive articles become “de” or “d'” in a negative sentence and can be translated as “any”.
Thanks