originally posted by DABhand
Actually I lied..
It does work, but not for rare items for upgrading.
You won't see them go up, but they do when you go to a different section of your inventory and back.
Passive Detectors are great for upgrading, they have a lot of XP. Just highlight them and hold in Num Pad 6 and wait
[Edited by DABhand, 10/10/2014 12:05:10 AM]
Yeah, As you progress through the story, there more rare ones that give off waay more XP.