Raise Up the Dead, Tie the Silver Cord

Raise Up the Dead, Alternate Effect “Tie the Silver Cord”: Force a newly dead character to temporarily re-inhabit their body. The revivified character must have at least 1 Wound successfully restored within the very next round, or will be (un)dead forever.

So this is basically a resurrection spell, am I right? What about “restoring” a Wound? Does it mean a Healing test, an NPC healer (like during Upkeep) or magical healing (like Golden Wine of Xuthal in the Book of Skelos)?