Re: Been there, done that.
>>>I still do not understand why "wallplug - switch" port is never documented anywhere.<<<
Because unless you're the only one who ever touches the patch panel the documentation will be useless in zero time flat.
If you can stand the cost having wires individually numbered (at both ends!) is a fairly idiot proof method of proving you're still with the same wire you started with when entering the cable pixies playground.
Biting the hand that feeds IT
