Trade spells gained from Gloom Stalker, etc.?

[Erzengel]

What do you think - when you gain a free spell from Gloom Stalker such as Disguise Self, then at the next level, can you trade that spell for another Ranger spell? Or do you have to keep the spell you gained from the archetype?

[Jerrykhor]

Pretty sure the intent is no. Unlike Divine Soul Sorcerer, which explicitly allows it.