 		set {
 			let from = _children
 			let to = newValue
-			for a in to {
-				if let i = from?.index(of: a), let b = from?[i] {
-					a.isExpanded = b.isExpanded
-					a.isSelected = b.isSelected
-					a.estimatedHeight = b.estimatedHeight
-				}
-			}
 			
 			if from != nil, let treeController = treeController, let index = flatIndex {
 				let size = self.size

			}
		}
		else {
			tableView?.reloadData()
		}
		

				case .move:
					let oldIndexPath = IndexPath(row: start + old!, section: 0)
					let newIndexPath = IndexPath(row: start + new!, section: 0)
					
					let node = nodes[new!]
					let oldNode = from[old!]
					node.isExpanded = oldNode.isExpanded
					node.isSelected = oldNode.isSelected
					node.estimatedHeight = oldNode.estimatedHeight
					node.update(from: oldNode)

					if node.isSelected {
						selections.append(newIndexPath)
					}
