The Prosperous Armor Trait has been re-designed to give it a combat function. It now grants 11 Health, Magicka, and Stamina Recovery as a gold-quality item, instead of gold gain. Due to these changes, this trait has been renamed to Invigorating.
but I cant seem to find the new enum for it. ITEM_TRAIT_TYPE_ARMOR_INVIGORATING doesn't exists