CVs lose parts easily enough, but damage to the hull wears off very quickly. How long did it take for you to "turn around for another drop"? If it was more than 5 minutes I'm guessing part of it "regenerated". I know that inside 15 minutes it'll be undone, as I've done tests offline before, where I would bomb it, die, reup and bomb it again but it would be full strength by the time I got back (inside 15 minutes).