Two icecast.xml files in LibreTime server

Hey everyone,
first of all, a heartfelt thank you to all the contributors of LibreTime!
We’re in the process of integrating LibreTime into our online radio, based in Amsterdam, and I’m pretty excited about it.
I noticed that there are two icecast.xml files in the server, and I wanna make sure that I understand what the difference between the two files is, and what purposes each of the files solved. I’ve been only programming for a year, and so far only in React, so please excuse if this question is an obvious one.
There’s one icecast.xml file in etc/icecast2/icecast.xml and there’s a second one in dev/icecast.xml.
I understand that etc/icecast2/icecast.xml is the file that I need to change in order to configure icecast on my server, but what is the purpose of dev/icecast.xml then? Is it just a backup file, or a config template?
Thanks for your help!