I'm afraid the template course creation it not what you'd expect. As of now, it doesn't completely copy the course content, just a few settings. That's why you see some references to your forums and chat, but not the forums and chat themselves. It doesn't copy blocks either.
I know it for a fact, as we are developing exactly this functionality for the external database enrolment plugin. Maybe we could have a look at what it would take to add it to the LDAP enrolment plugin too, but I can make no promises (we are a bit tight on both budget and time).
Saludos. Iñaki.