As you see, the 4 star armour now has -12% dark resistance where as the no star armour has 10%.
I dont think it is meant that an upgrade can imbue -22% resistance.
It checks out on my stats panel aswell now that my dark resistance is -5.3%
The name of the armour is LuciferArmour of Darkness.
Other items with this suffix has positive dark resistance.
Is this fixable?
Character name: LingonBerry