Using CActiveRecord->updateAll() and CActiveRecord->deleteAll() with scopes and criteria requires some tricks that are explained in this article. While findAll() , find() and some other methods use scopes automatically, updateAll() and deleteAll() do not.
I keep a reference to some simple but painful task if you forget a common or something. I am new to Yii and this took awhile for me to figure out. Everything I read said do this or do that and not a single one worked for me. However, the following did.