For everyone no longer seeing the pieces in their inventory, check the marketplace item instead. They should have been converted from the inventory item to the defense potion item just below SoDs.
On the eb page it says ZTA requires 100 items to unlock however when I tested it on an alt I still did over 100 damage due to how items now damage ebs. Is there any way to keep the item damage constant on zta to help make it fairer for players?
It was from the black carriage event, from Black Friday, small error I guess. Also, the boxes to open for the effigies from ZTA are missing too.