Further Clarification for Ravenous skill from Blood Hunt requested

You mentioned the following in the recent FAQ:

"

GGG wrote:

Is the Ravenous buff lost when I change zones? Does the buff persist after I die?

The buff does not persist between areas or through death. The intention is for you to pick a monster type based on the zone you're in, whether that map primarily consists of a particular monster type. Purchasable corpses can be used in cases where you need the bonus for a particular reason, such as fighting a boss.

Does the buff persist in the same zone instance after using a Portal (or other means) to leave and then re-enter the zone? Vaal Souls remain attached to an unexpired instance, for example, but do not persist between different zones.

Would the player have to re-apply the skill with a new corpse upon returning from a portal?