When a piglin converts to a zombified piglin, any items it picked up as a piglin disappear and do not drop when the zombified piglin is killed.
Piglins keep their equipped items when converting to a zombified piglin
Zombified Piglins don't drop their picked up inventories when killed
Piglins do not drop their gear when turned into a zombified piglin
Piglins which convert into zombified piglins delete armor if equipped