Do Zhonya's Hourglass or Sett's ability remove the Temporary keyword from a unit?

Ruling: No, Zhonya's Hourglass and Sett's ability do not remove Temporary. All temporary (not-base) aspects of a unit are kept since the unit never left the board, including might alterations, buffs, and keywords.

Nuances:

• These effects only replace the execution of the specific death trigger, changing it from "Kill me" to "Heal me and recall me exhausted"
• The Temporary keyword is intended to stick on the unit beyond just the turn it was applied
• Fading Memories is currently the only spell that modifies a unit beyond the current turn, which can make this interaction feel unintuitive