diff --git a/anki/deck.py b/anki/deck.py
index 4b12fa328..d9d3e5a19 100644
--- a/anki/deck.py
+++ b/anki/deck.py
@@ -2273,7 +2273,7 @@ Return new path, relative to media dir."""
             pass
         self.startProgress()
         # copy tables, avoiding implicit commit on current db
-        DeckStorage.Deck(newPath).close()
+        DeckStorage.Deck(newPath, backup=False).close()
         new = sqlite.connect(newPath)
         for table in self.s.column0(
             "select name from sqlite_master where type = 'table'"):
@@ -2297,7 +2297,7 @@ Return new path, relative to media dir."""
         new.close()
         self.close()
         # open again in orm
-        newDeck = DeckStorage.Deck(newPath)
+        newDeck = DeckStorage.Deck(newPath, backup=False)
         # move media
         if oldMediaDir:
             newDeck.renameMediaDir(oldMediaDir)
diff --git a/anki/importing/anki10.py b/anki/importing/anki10.py
index a0d73ebf1..cb0f33b9b 100644
--- a/anki/importing/anki10.py
+++ b/anki/importing/anki10.py
@@ -28,7 +28,7 @@ class Anki10Importer(Importer):
             num += 1
         self.deck.startProgress(num)
         self.deck.updateProgress(_("Importing..."))
-        src = DeckStorage.Deck(self.file)
+        src = DeckStorage.Deck(self.file, backup=False)
         client = SyncClient(self.deck)
         server = SyncServer(src)
         client.setServer(server)