I suspect you correct Bobbie but the way mine are mounted tucked in behind the bumper its not possible to get the bar up between the bumper & the jack to do it that way.
BTW if you lubricate the jacks it does make them easier to get them out of their traveling position& back up. Also found when I got mine replaced I couldnt get them down by hand at first - had to loosen them off a *little* bit from the bumper to make it a bit easier to get them down. Have not had them
fall down while traveling as some folks seem to have a problem with - suspect in those situations the jacks may have actually been attached a bit to loosely to the bumper.