When I tried to place my radiant shards and energy into the vault, my shards disappeared! I had 5 radiant shards and placed them into the vault but then I checked, they weren't there nor were they in my inventory. I know for sure I had some (at least 3) because I JUST (meaning right before I tried to place them into the vault) dismantled my Eris Morn gloves (the ones she gives you when you finish her quest) AND crota gloves they're not anywhere. What the heck?! It's hard enough earning radiant anything but to lose them when I'm trying to store them? Bull
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I don't think you get radiant material from eris stuff.