diff --git a/contract/migrations/9.0.1.0.0/pre-migration.py b/contract/migrations/9.0.1.0.0/pre-migration.py
new file mode 100644
index 00000000..db7adafa
--- /dev/null
+++ b/contract/migrations/9.0.1.0.0/pre-migration.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 Tecnativa - Pedro M. Baeza <pedro.baeza@tecnativa.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+from openupgradelib import openupgrade
+
+column_copys = {
+    'account_analytic_account': [
+        (openupgrade.get_legacy_name('date_start'), 'date_start', None),
+    ],
+}
+
+
+@openupgrade.migrate()
+def migrate(cr, version):
+    openupgrade.copy_columns(cr, column_copys)
+    openupgrade.update_module_names(
+        cr, [
+            ('hr_timesheet_invoice', 'contract'),
+            ('contract_journal', 'contract'),
+            ('contract_discount', 'contract'),
+            ('contract_recurring_invoicing_marker', 'contract'),
+            ('contract_recurring_invoicing_monthly_last_day', 'contract'),
+            ('contract_show_recurring_invoice', 'contract'),
+        ], merge_modules=True,
+    )