From 9addf2485fdd1323c966e545f3c79347d2426915 Mon Sep 17 00:00:00 2001
From: Melinda Loubser <32034278+melindaloubser1@users.noreply.github.com>
Date: Thu, 22 Oct 2020 15:39:06 +0200
Subject: [PATCH] append stories if file exists (#7044)

---
 rasa/shared/core/trackers.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/rasa/shared/core/trackers.py b/rasa/shared/core/trackers.py
index ba6518f8582d..2e44fc1c2441 100644
--- a/rasa/shared/core/trackers.py
+++ b/rasa/shared/core/trackers.py
@@ -625,10 +625,12 @@ def export_stories_to_file(self, export_path: Text = "debug_stories.yml") -> Non
             YAMLStoryWriter,
         )
 
-        append = not os.path.exists(export_path)
+        append = os.path.exists(export_path)
 
         rasa.shared.utils.io.write_text_file(
-            self.export_stories(YAMLStoryWriter()) + "\n", export_path, append=append
+            self.export_stories(YAMLStoryWriter(), should_append_stories=append) + "\n",
+            export_path,
+            append=append,
         )
 
     def get_last_event_for(