I suspect if these missions are like the original, you DO NOT lose the item you were sent to collect. (when ya had to collect the vibrant sweat, it stayed in inventory). So, if the reward for collecting the electro matrix IS a pixie shin, that's just a few extra pec ya didn't have before.
this cant be or i would be able to take a friends loot to the npc ,collect my rewards and give him his stuff back , if this is how it will go for collecting them items i will be done before i even started