It was not a question, it was a bug report.
I did not forget to add an explanation. I generally don't bother when I'm making changes to profiles I manage or making trivial changes to someone else's profile. In this case, I did, since one of the profiles has another manager and disconnecting a child is a major change.
If you think that I was imagining things, why don't you try an experiment - disconnect a parent, with an explanation, and see if it sticks?