In theory (though I haven’t tested it yet), I think this is possible using Sang's ARPG plugin. The one that lets you spawn events from a different map. With that feature, they could spawn a separate copy of the same NPC or item that doesn’t include the icon notetag. You can do it by putting the spawn parameters directly inside the original event. That way, it spawns an alternate copy of the same NPC/item—one that doesn’t need the icon notetag at all.