@Noah4
A listing can have more then 1 language in it by using the "add language" feature, so there is no need to have separate listings. It is also inconvience, because then there are two calenders involved for same accomodation. When you delete ("deactivate") 1 listing, the reviews on it will remain in your profile. But they can not be transferred to the other listing, even if it refers to the same accomodation, as each listing has a unique listing number.
Best regards,
Emiel