If a Demon Prince grafts a Celestial Force onto a angel remnant, is the resulting celestial a demon?
If the repairs can be done relatively easily (GM’s decision), then the Remnant regains his former Choir, but may be dissonant or Discordant. Princes work with twisted Forces. More difficult cases, where few angelic Forces are left, will only produce a demon – and possibly a dissonance or Discordant one. Really difficult cases are essentially using the Remnant’s remaining Forces to build a demon with, and hoping there will be some memory ovelap.