Okay, I know I'm an idiot for what I did but is there any hope?
I was 'using' Motes to level up my gear and they happened to be the most lower-left slot. (And I was cranking through a whole bunch.)
Something happened...I don't even recall what I did... I must have done something...
I went to 'use' another Mote and I caught a glimpse of the word, discard, and before I could even think, the lower-left slot was empty and my Motes were one slot back, up a row on the right.
So it turns out I discarded hundreds of Armor Materials that I was saving for RoI!
Is there any way to get my materials back?