If action=query&meta=authmanagerinfo returned true for hasprimarypreservedstate, requests marked as primary-required should be omitted. If it returned a non-empty value for preservedusername, that username must be used for the username parameter.
If action=query&meta=authmanagerinfo returned true for hasprimarypreservedstate, requests marked as primary-required should be omitted. If it returned a non-empty value for preservedusername, that username must be used for the username parameter.