How Logging Works (or doesn't)?

Using SuperSU 2.46 on rooted Samsung Note 3 (exynos) and Android 4.4.2 (stock). I am in PseudoPro mode. I am wanting to see what commands are being executed via su. I have logging set to "full content". I see some apps and their su command contents. But others I think I should be seeing are not showing up.

I use the Xplore app as a file manager. I grant it root access and it mostly works great! But if I use it to delete a file from /cache/recovery, I expect it must do this via su. If I simply open a terminal emulator window I must su before I can delete the file. But there is no log of this action in SuperSu if I delete the file via Xplore. I don't understand why not. If I use Xplore to show me the contents of a file in /cache/recovery, I see a cat command logged in SuperSu.

So I must be missing something here. Should SuperSu be logging the rm command issued by XPlore? If so, why am I not seeing it?

Thanks for any light shed on this mystery.