Movable Tweak has a “useful article”:http://www.movabletweak.com/templates/easy_templating_with_individua.php for those of us who find themselves rebuilding hundreds of individual entries whenever they make a change to the individual entry archive template.
Of the two methods suggested, I’ve adopted the second — where you set up the individual entry archive as an index template — and it works like a charm. Highly recommended!
Okay, WordPress users. You can stop laughing at us now.