diff --git a/awx/api/views.py b/awx/api/views.py
index c5cc0fdd16..b05f113be6 100644
--- a/awx/api/views.py
+++ b/awx/api/views.py
@@ -1493,7 +1493,7 @@ class JobTemplateLaunch(GenericAPIView):
                                     status=status.HTTP_400_BAD_REQUEST)
         if obj.credential is None and ('credential' not in request.DATA and 'credential_id' not in request.DATA):
             return Response(dict(errors="Credential not provided"), status=status.HTTP_400_BAD_REQUEST)
-        new_job = obj.create_unified_job()
+        new_job = obj.create_unified_job(**request.DATA)
         result = new_job.signal_start(**request.DATA)
         if not result:
             data = dict(passwords_needed_to_start=new_job.passwords_needed_to_start)
diff --git a/awx/main/models/unified_jobs.py b/awx/main/models/unified_jobs.py
index 4486dc88c5..67199d8bc1 100644
--- a/awx/main/models/unified_jobs.py
+++ b/awx/main/models/unified_jobs.py
@@ -290,6 +290,8 @@ class UnifiedJobTemplate(PolymorphicModel, CommonModelNameNotUnique):
         unified_job_class = self._get_unified_job_class()
         parent_field_name = unified_job_class._get_parent_field_name()
         kwargs.pop('%s_id' % parent_field_name, None)
+        if 'extra_vars' in kwargs:
+            kwargs.pop('extra_vars')
         create_kwargs = {}
         create_kwargs[parent_field_name] = self
         for field_name in self._get_unified_job_field_names():