I agree with Hellfire. Subject to "platform" differences it should be a simple copy and paste. I'd do a few lines at a time so if any aren't right you'll know without having to go trawling back through a load of config to find the bad line.
...forgot to add... is either AP the lightweight model (AIR-LAPxx) or the autonomous (AIR-APxx) ? If the lightweight, the config / management is done from the wireless controller; there's no actual config to pull off the AP.