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
diff --git a/erpnext/patches/v11_0/check_buying_selling_in_currency_exchange.py b/erpnext/patches/v11_0/check_buying_selling_in_currency_exchange.py
new file mode 100644
index 0000000..ee336be
--- /dev/null
+++ b/erpnext/patches/v11_0/check_buying_selling_in_currency_exchange.py
@@ -0,0 +1,5 @@
+import frappe
+
+def execute():
+ frappe.reload_doc('setup', 'doctype', 'currency_exchange')
+ frappe.db.sql("""update `tabCurrency Exchange` set for_buying = 1, for_selling = 1""")
\ No newline at end of file