The Archives of Nethys
entry for the Archetype rules says:
Quote:
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Occasionally, an archetype feat works like a skill feat instead of a class feat. These archetype feats have the skill trait, and you select them in place of a skill feat, otherwise following the same rules above. These aren't archetype class feats (for instance, to determine the number of Hit Points you gain from the Fighter Resiliency archetype feat).
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(Emphasis mine. The "rules above" reference is about taking non-Skill Archetype feats as Class feats.)
So you have to take it as a Skill Feat, even if it comes from the Archetype/Dedication. That also means you can't take them with Free Archetype feat slots.