diff --git a/src/core/ReactDOMIDOperations.js b/src/core/ReactDOMIDOperations.js
index 8f39858821..a0ddd01720 100644
--- a/src/core/ReactDOMIDOperations.js
+++ b/src/core/ReactDOMIDOperations.js
@@ -161,7 +161,6 @@ var ReactDOMIDOperations = {
   dangerouslyReplaceNodeWithMarkupByID: function(id, markup) {
     var node = ReactID.getNode(id);
     DOMChildrenOperations.dangerouslyReplaceNodeWithMarkup(node, markup);
-    ReactID.purgeEntireCache();
   },
 
   /**
@@ -171,7 +170,6 @@ var ReactDOMIDOperations = {
   manageChildrenByParentID: function(parentID, domOperations) {
     var parent = ReactID.getNode(parentID);
     DOMChildrenOperations.manageChildren(parent, domOperations);
-    ReactID.purgeEntireCache();
   }
 
 };
diff --git a/src/core/ReactID.js b/src/core/ReactID.js
index d677b14e8a..e8c34db031 100644
--- a/src/core/ReactID.js
+++ b/src/core/ReactID.js
@@ -158,16 +158,8 @@ function purgeID(id) {
   delete nodeCache[id];
 }
 
-/**
- * Clears the entire cache.
- */
-function purgeEntireCache() {
-  nodeCache = {};
-}
-
 exports.ATTR_NAME = ATTR_NAME;
 exports.getID = getID;
 exports.setID = setID;
 exports.getNode = getNode;
 exports.purgeID = purgeID;
-exports.purgeEntireCache = purgeEntireCache;