If a cover is cracked from a real hit rather than a scrape, check the bar: a bent reinforcement will not let a new cover sit square.
The reinforcement bar and energy absorber are the parts that actually take the load. If a cover has cracked from a real impact rather than a scrape, inspect the bar and the mounting points on the body rail: a bent bar will not let a new cover sit square, and a straightened bar will not behave the same way twice.
