I notice that a common complaint about what are percieved as "bad" dubs is that they change or skip portions of the original meaning. Since I'm guessing they don't dub the entire series at once (if even possible for some series), what happens when they're doing episode 75, and realise that they left out an important detail in episode 10 as "insignificant". Do they tend to add a cheesy flashback to reveal the missing content, "fix" the later material to depend less on the earlier, or just pretend it's there and baffle the audience?
Just curious.