I just swapped out Radiant Light for Powerful Friends on my bond just to have a look at a potential build's stats and now it has been removed from that armor completely. It is not in the list of mods anymore. I can still select it on other pieces of armor, though. Has anyone else had this happen to them? Does anyone know if it has been acknowledged by Bungie? edit: I just went to the Prismatic Refractor and was able to re-purchase Radiant Light and I can now equip it on my bond again. BE CAREFUL lest this same thing happen to you on a day that Radiant Light is not being sold. Spread the word, it was a total buzzkill when it happened to me.