I'm pretty new to the OTRS world, and I'm trying to discover it by myself as much as I can until now

I'll do a little foreword:
In my system, migrated from an old 2.4.4 version step by step until the latest one, I' ve configured multiple queues with subqueues like this example:
A
A::B
A::C
My configured fetch put all the incoming email into the A queues, and on this I've defined an auto reply. Then I move manually the ticket to the appropriate queue.
I've defined various answer template too.
Now, when I receive a new ticket, I select my reply template answer, but it shows me the autoreply text that quote the ticket text, and then my answer template.
How can I set to view only my template text defined?
Hoping to be quite clear on explanation, and in someone that can help me, I appreciate all that support and the works of this community!
Thanks in advance.
Matteo