Discarnated spirits are aspects of a soul that didn't fully transition when they left the physical body when they died. During shamanic reiki sessions I often come across discarnated spirits that are finally ready to fully transition. I always see the "stairway to heaven" with the divine masters, angels, their loved ones (including animals) and I always work with Master Jesus when doing shamanic reiki.
Giving reiki to a discarnated spirit at any time before their full transition back to Creator God, while they're still in this dimension, will actually Lighten/heal/transmute the denser energy that kept them stuck in this Realm so they can "lighten up" to become more Light just before they fully ascend back to God/Infinite Divine Intelligence/Source energy to be fully healed in accord with Divine Will.
It's such a beautiful and loving process that supports all life: the soul, the person on the table, and the entire consciousness of the planet.