Lucy Spell Data History - Lich
2006-10-02 22:39 Changed Slot 7 from "Decrease Hitpoints by 22 per tick" to "Decrease Hitpoints by 32 per tick"
2003-04-23 11:08 Added Slot 7: Decrease Hitpoints by 32 per tick
2003-04-23 11:08 Removed Slot 3: Decrease Hitpoints by 32 per tick
Lucy Spell Data History - Demi Lich
It wasn't until 2006 when Demi Lich got changed to have 32 HP Degeneration. This is even after it was changed to a level 56 spell:
2006-09-27 12:11 Changed Slot 7 from "Decrease Hitpoints by 48 per tick" to "Decrease Hitpoints by 32 per tick"
2003-04-23 11:08 Added Slot 7: Decrease Hitpoints by 48 per tick
2003-04-23 11:08 Removed Slot 3: Decrease Hitpoints by 48 per tick
Both of these show the classic HP drain components in 2003 getting swapped spell slots. Then in 2006 the drain value was reduced to the values we currently have on P99.