We decided against having the fancy version of the Up2Date Cache in the new ACC due to a variety of reasons. We have limited it to an easy to use version which nevertheless provides all caching, performance and bandwidth reduction benefits.
You can delete the contents of the cache as a whole and the cache is self-purging, so that old entries which are no longer requested by any device will be removed automatically.
At this time, there is no plan to reestablish the previous administrative view.