Many operators transport servicable tires at full operating pressure, wear limitations are designed for operational purposes, static and worn or cut in the tread I don't know. There is not really much literature on the subject and not saying it is right to transport worn tires fully charged but I can not say it is wrong either.
I dump most pressure during removal for 2 reasons 1- broken tie bolts 2-much easier to handle. There are no brainers like a light post shaft sticking out of one, if I can not determine if the carcass ply has been damaged by measuring cut depth, I would consider the tire to have dangerous potential.