Liberator(99) with Enhances Absorb Spells V has no effect on Absorb-Attri.
Absorb-Attri is an absorb spell and therefore should receive enhanced buffs absorbed from Liberator. (At least two.)
Absorb-Attri receives no benefit whatsoever from the Dark Knight empyrean armor, Bale Flanchard +2 when used in conjunction with Nether Void, the absorbed effects should be 3.