Add Patch to update existing records
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index cdea9e7..fa2251f 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -537,3 +537,4 @@
 erpnext.patches.v11_0.create_department_records_for_each_company
 erpnext.patches.v11_0.make_location_from_warehouse
 erpnext.patches.v11_0.make_asset_finance_book_against_old_entries
+erpnext.patches.v11_0.check_buying_selling_in_currency_exchange