Honestly i think it was good that it didnt reset. Getting killed by the trap is almost certainly what every player would run into the first time they load the level as there isnt a warning nor does it look deadly enough till you get caught in it.
I might not haven given the game another go if I had to restart as it takes a bit of repetition to then get back to the same stage, but it is your game so I leave it up to you! Just offering my thoughts :)