Like pathauto, auto_nodetitle almost always fires up the poorly performing D6 token system. I’d like to automatically disable it like we do pathauto. Then it is up to the implementer to set $entity->title as desired. Without disabling, ANT will use presave hook to trample over any title that was set by mapping or prepare.
Disabling is done by setting $entity->auto_nodetitle_applied=1.