Character: blades-edge/lokstar (my dusty legion warlock alt)
In-Game State:
Equipped chest piece: The Master Harvester
Transmogged to: Replica Deathmist Robe
Item icon on character sheet and Xmog appearance in game appear as expected.
Result from blades-edge/lokstar/equipment:
No chest item returned.
All other slots work as expected.
Result from blades-edge/lokstar/appearance:
Chest slot shows xmog item as expected.
Result from armory web page:
On character sheet, chest slot shows as empty.
Character display includes the robe as transmogged.