I guess this is the way it is

hobo

So I have a few signatures stone about to expire do I go into inventory and used them on a few champions yet every time I go into my overflow inventory the game would not let me add to my regular limited inventory. So allowing for the rare possibility that maybe I was using the wrong item I used every stone in my inventory to see if I had used the wrong item. Short story after applying all my signature stones I had in my limited storage space, I still could not add the expiring stones to my limited inventory and ended up having to sell the expiring stones in the end. Great job on the game Kabam, you just get getting better and better smh.

Pikolu

Sig stones are autofilled so if you had 25 in overflow and used 25 sig stones, then the 25 in overflow are automatically put into your stash and out of overflow.