diff --git a/src/Controller/JobOrderController.php b/src/Controller/JobOrderController.php
index fe02416d..4f5bfd76 100644
--- a/src/Controller/JobOrderController.php
+++ b/src/Controller/JobOrderController.php
@@ -296,10 +296,11 @@ class JobOrderController extends Controller
 
             // did they change invoice?
             $invoice_items = $req->request->get('invoice_items', []);
+            $invoice_change = $req->request->get('invoice_change', 0);
             $promo_id = $req->request->get('invoice_promo');
                 
             // call service to generate job order and invoice
-            $joc->generateJobOrder($obj, $promo_id, $invoice_items, $error_array);
+            $joc->generateJobOrder($obj, $promo_id, $invoice_change, $invoice_items, $error_array);
 
         }
 
@@ -425,8 +426,9 @@ class JobOrderController extends Controller
             // call service to generate job order and invoice
             $invoice_items = $req->request->get('invoice_items', []);
             $promo_id = $req->request->get('invoice_promo');
+            $invoice_change = true;
 
-            $joc->generateJobOrder($obj, $promo_id, $invoice_items, $error_array);
+            $joc->generateJobOrder($obj, $promo_id, $invoice_change, $invoice_items, $error_array);
         }
 
         // check if any errors were found
diff --git a/src/Service/JobOrderGenerator/ResqJobOrderGenerator.php b/src/Service/JobOrderGenerator/ResqJobOrderGenerator.php
index 38e347bc..118dbe97 100644
--- a/src/Service/JobOrderGenerator/ResqJobOrderGenerator.php
+++ b/src/Service/JobOrderGenerator/ResqJobOrderGenerator.php
@@ -34,11 +34,15 @@ class ResqJobOrderGenerator implements JobOrderGeneratorInterface
         $this->security = $security;
         $this->validator = $validator;
     }
-    public function generateJobOrder(JobOrder $jo, $promo_id, $invoice_items, &$error_array)
+    public function generateJobOrder(JobOrder $jo, $promo_id, $invoice_change, $invoice_items, &$error_array)
     {
         // TODO: data validation to be moved here
         
-        $this->processInvoice($jo, $promo_id, $invoice_items, $error_array);
+        // check if invoice changed
+        if ($invoice_change)
+        {
+            $this->processInvoice($jo, $promo_id, $invoice_items, $error_array);
+        }
 
         // validate
         $errors = $this->validator->validate($jo);
diff --git a/src/Service/JobOrderGeneratorInterface.php b/src/Service/JobOrderGeneratorInterface.php
index fb4d641b..da4090cb 100644
--- a/src/Service/JobOrderGeneratorInterface.php
+++ b/src/Service/JobOrderGeneratorInterface.php
@@ -8,5 +8,6 @@ use App\Entity\InvoiceItem;
 interface JobOrderGeneratorInterface
 {
     // generate job order 
-    public function generateJobOrder(JobOrder $jo, int $promo_id, array $invoice_items, array &$error_array);
+    public function generateJobOrder(JobOrder $jo, int $promo_id, bool $invoice_change,
+                                     array $invoice_items, array &$error_array);
 }