diff --git a/src/main/java/net/floodlightcontroller/flowcache/FlowManager.java b/src/main/java/net/floodlightcontroller/flowcache/FlowManager.java
index 7efa49c..cce873a 100644
--- a/src/main/java/net/floodlightcontroller/flowcache/FlowManager.java
+++ b/src/main/java/net/floodlightcontroller/flowcache/FlowManager.java
@@ -1851,7 +1851,9 @@
     public boolean measurementInstallPaths(Integer numThreads) {
 	List<Thread> threads = new LinkedList<Thread>();
 
-	measurementProcessingPaths = measurementStoredPaths;
+	// Create a copy of the paths to install
+	measurementProcessingPaths = new LinkedList<FlowPath>(measurementStoredPaths);
+
 	//
 	// Create the threads to install the Flow Paths
 	//
@@ -1935,6 +1937,8 @@
     public boolean measurementClearAllPaths() {
 	measurementStoredPaths.clear();
 	topoRouteService.dropShortestPathTopo();
+	measurementStartTimeProcessingPaths = 0;
+	measurementEndTimeProcessingPaths = 0;
 
 	return true;
     }