Advanced Button Controller (ABC)

Hi. Certain this is a real simple question. When i initially installed ABC, i ended up with 2 files on my Apps code page. ABC Button Mapping and Advanced Button Controller. I was recently adding some button functionality for a "go to bed routine" (lights, locks, garage doors...etc) and noticed there was a child update available.
I wanted to confirm a couple of things before i updated.

Im pretty certain that the ABC button mapping is the child as the notes in the raw file has a note "ABC Child Creator for Advanced Button Controller"

But on the Advanced Button Controller App there is a note that says Advanced Button Controller (Parent/Child Version).

So i just wanted to confirm which file i update for the child.

One more question please. Do i erase the child user app and reinstall fresh or copy over the code in the App with the update?

Thanks in advance
Mac