Same Language Dubs

A Same Language Dub refers to when a production already in English receives a new dub with new voice actors. Typically done when productions are from other English speaking countries, often due to having heavily accented actors, when an actor is replaced and the production company decides to re-record the old actor's dialogue with the new one, or (in older days) not filming with sound, mostly it is more common back in the day, we rarely or barely see it nowadays.