diff --git a/CRM/TwingleCampaign/BAO/TwingleProject.php b/CRM/TwingleCampaign/BAO/TwingleProject.php
index fe27794..2473c3d 100644
--- a/CRM/TwingleCampaign/BAO/TwingleProject.php
+++ b/CRM/TwingleCampaign/BAO/TwingleProject.php
@@ -91,8 +91,8 @@ class CRM_TwingleCampaign_BAO_TwingleProject extends Campaign {
    * @throws \Exception
    */
   public function clone() {
-    unset($this->values['id']);
-    unset($this->values['identifier']);
+    $this->values['id'] = 0;
+    $this->values['identifier'] = 0;
     $this->create(); // this will also trigger the postSave hook
   }
 
diff --git a/twinglecampaign.php b/twinglecampaign.php
index 4ec4e54..58b5b65 100644
--- a/twinglecampaign.php
+++ b/twinglecampaign.php
@@ -89,7 +89,10 @@ function twinglecampaign_postSave_callback (
       $result = civicrm_api3($entity, 'getsingle',
         ['id' => $campaign_id]
       )['values'][$campaign_id];
-      $project = new $entity($result);
+      $className = 'CRM_TwingleCampaign_BAO_' . $entity;
+      $id = $result['id'];
+      unset($result['id']);
+      $project = new $className($result, $id);
       try {
         $project->clone();
       } catch (Exception $e) {