You're completely correct, apologies (this is why I should leave support to @Edward Z88!)
Delete that Inhibitor Playback, and we'll do it a different way:
Take the relevant channels to 0% in the programmer (so they are red "0"s)
Press-and-hold RECORD until you see the Record Window appear on the internal screen
Turn off "Smart Tag" (so there isn't a red strip on the left hand side of the button)
Press the flashing button of the Playback you want to record onto
Hold SETUP & Press the GO button of that Playback
Change "Intensity Mixing" to "Latest Takes Precedence" and click "OK"
Now, the flash button of that Playback should take those channels to 0%.