They should be. Anything that used to have a chance to reward you with a random magical item, will continue to draw from the same list of items - however they will now have the improved loot property generation run on them. These are not effected by luck.@Kyronix - Will the Heartwod quests (or more generically all of the ML quests) be included in the upcoming global loot changes? I am not asking about the chances to receive a runic tool, just the items given out.