From e4035713701bd9c3d36d81f515dc6f01e807c146 Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Fri, 9 Nov 2012 16:51:46 -0800
Subject: [PATCH] Clone and manipulate entities directly

---
 js/iD/graph/Graph.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/js/iD/graph/Graph.js b/js/iD/graph/Graph.js
index 13b07703b..5e609df34 100644
--- a/js/iD/graph/Graph.js
+++ b/js/iD/graph/Graph.js
@@ -35,13 +35,15 @@ iD.Graph.prototype = {
     },
 
     replace: function(entity, annotation) {
-        var o = {};
-        o[entity.id] = entity;
-        return iD.Graph(pdata.object(this.entities).set(o).get(), annotation);
+        var entities = _.clone(this.entities);
+        entities[entity.id] = entity;
+        return iD.Graph(entities, annotation);
     },
 
     remove: function(entity, annotation) {
-        return iD.Graph(pdata.object(this.entities).remove(entity.id).get(), annotation);
+        var entities = _.clone(this.entities);
+        delete entities[entity.id];
+        return iD.Graph(entities, annotation);
     },
 
     // get all objects that intersect an extent.