Wellspring Gnome + First World Magic question

[aaronak]

I do not understand how the Wellspring Gnome feat works with First World Magic.

Wellspring Gnome wrote:

Choose arcane, divine, or occult. [...] Whenever you gain a primal innate spell from a gnome ancestry feat, change its tradition from primal to your chosen tradition.

First World Magic wrote:

Choose one cantrip from the primal spell list. You can cast this spell as a primal innate spell at will.

Supposing you choose "arcane", do you choose a cantrip from the primal list and cast it as arcane? Or do you choose a cantrip from the arcane spell list?

And does this cantrip serve as a prerequisite for First World Adept (which requires "at least one primal innate spell"?

[thenobledrake]

You would choose from the primal spell list as told, then change the tradition to match your wellspring gnome choice.

And it would then be not a primal innate spell, so no it doesn't count as a primal innate spell.