I added a couple more parameters to pass through to the user record. I am using this as a row action redirect URL. Let me know if you have any questions.
/005/e?ut=P&retURL=%2F/apex/skuid__ui?page=NameofPage%3Fnooverride%3D1%26sfdc.override%3D0&cntc={{Id}}&Email={{Internal_Email__c}}&Username={{Internal_Email__c}}&name_firstName={{FirstName}}&name_lastName={{LastName}}&Alias={{Alias__c}}&CommunityNickname={{Name}}&Profile={{Portal_Profile_ID__c}}
