[OU-FIX] contract: Transfer contract info from invoice

Author: pedrobaeza

Diff for: contract/migrations/13.0.1.0.0/post-migration.py

@@ -6,9 +6,28 @@
 
 @openupgrade.migrate()
 def migrate(env, version):
+    openupgrade.logged_query(
+        env.cr,
+        """
+        UPDATE account_move am
+        SET old_contract_id = ai.old_contract_id
+        FROM account_invoice ai
+        WHERE ai.id = am.old_invoice_id
+            AND ai.old_contract_id IS NOT NULL""",
+    )
+    openupgrade.logged_query(
+        env.cr,
+        """
+        UPDATE account_move_line aml
+        SET contract_line_id = ail.contract_line_id
+        FROM account_invoice_line ail
+        WHERE ail.id = aml.old_invoice_line_id
+            AND ail.contract_line_id IS NOT NULL""",
+    )
     openupgrade.load_data(
         env.cr, "contract", "migrations/13.0.1.0.0/noupdate_changes.xml"
     )
+
     # Don't alter line recurrence v12 behavior
     contracts = env["contract.contract"].search([])
     contracts.write({"line_recurrence": True})