diff --git a/netforce_clinic/migrations/__init__.py b/netforce_clinic/migrations/__init__.py
index d628d8f..4647e40 100644
--- a/netforce_clinic/migrations/__init__.py
+++ b/netforce_clinic/migrations/__init__.py
@@ -1,3 +1,3 @@
 #from . import clinic_setting
-#from . import conv_bal
-from . import repost_invoice
+from . import conv_bal
+#from . import repost_invoice
diff --git a/netforce_clinic/models/conv_bal.py b/netforce_clinic/models/conv_bal.py
index 6023d6e..0f12683 100644
--- a/netforce_clinic/models/conv_bal.py
+++ b/netforce_clinic/models/conv_bal.py
@@ -54,7 +54,7 @@ class ConvBal(Model):
             else:
                 get_model("account.invoice").create(vals)
 
-    def import_sale_file(self,ids,context):
+    def _import_sale_file(self,ids,context):
         obj=self.browse(ids)[0]
         path=get_file_path(obj.file)
         data=open(path).read()