DracoSuave
First Post
My question wasn't about choosing another power when you gain the domain power, though - it was about using the retraining rules to replace a domain power with another power of the same frequency and level, and from the same class.
Retraining never allows you to replace a power that you have no choice but to take.
You cannot retrain Eldritch Blast into Dire Radiance, for example.
In the case of Clerics, they're the result of features 'Domain Features' and 'Domain Encounter Power' and not the result of any normal power progression. They are as untrainable as Spirit Boons' powers are, or Pact At-Wills.