From 35a95b1d32736d66419662f68c415f54ab859875 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 27 Feb 2014 19:12:01 +0530
Subject: [PATCH] ...

---
 src/calibre/gui2/tweak_book/boss.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/calibre/gui2/tweak_book/boss.py b/src/calibre/gui2/tweak_book/boss.py
index 685db9bd67..3d66e433d5 100644
--- a/src/calibre/gui2/tweak_book/boss.py
+++ b/src/calibre/gui2/tweak_book/boss.py
@@ -174,6 +174,8 @@ class Boss(QObject):
         if hasattr(path, 'rstrip'):
             d.set_src(os.path.abspath(path))
         if d.exec_() == d.Accepted:
+            for name in tuple(editors):
+                self.close_editor(name)
             from calibre.ebooks.oeb.polish.import_book import import_book_as_epub
             src, dest = d.data
             self._clear_notify_data = True