If you are looking into this, I also posted in another thread my friend noticed his items also were missing. It looks from the debug I posted, the items were actually consumed like food....but I could be wrong.
Code:
[Debug] [INVENTORY__SLOTS] Ellisar: Src slot 30 has item Crushed Onyx Sapphire (25841) with 1 charges in it.
[Debug] [INVENTORY__SLOTS] Ellisar: Dest slot 312 has item Crushed Onyx Sapphire (25841) with 2 charges in it.
[Debug] [INVENTORY__SLOTS] Ellisar: Move from 30 to 312 with stack size 1. dest has 2/20 charges
[Debug] [INVENTORY__SLOTS] Ellisar: Dest (312) now has 3 charges, source (30) was entirely consumed. (1 moved)