Now before it all starts, yes I should have checked and verified but I didn't. After hours of grinding to get enough glimmer I go to the tower to upgrade my two Suros Regimes. I grabbed the one not equipped from my vault and go to xur. I proceed to upgrade one. I then do it again to the other one. I check and see that the one equipped is now the 331 version but my other one is not. "Not thinking" I go to xur and do it again. Same thing..... Finally I realize that you must have the weapon equipped.... dumb mistake but there are no notifications that it must be equipped. So needless to say I'm 15,578 glimmer and 2 exotic shards to the negative. Hope my errors help others. Bungie, I see that statement about getting materials bask and decisions are permanent. But, I was trying to buy the weapon not dismantle something I thought I didn't want. Any chance I can get a suros, 7789 and one exotic shard? Thank you very much.