diff --git a/erpnext/shopping_cart/test_shopping_cart.py b/erpnext/shopping_cart/test_shopping_cart.py
index 17fc73e..a8308b2 100644
--- a/erpnext/shopping_cart/test_shopping_cart.py
+++ b/erpnext/shopping_cart/test_shopping_cart.py
@@ -197,8 +197,7 @@
 
 	def remove_all_items_from_cart(self):
 		quotation = _get_cart_quotation()
-		quotation.set("items", [])
-		quotation.save(ignore_permissions=True)
+		quotation.delete()
 
 	def create_user_if_not_exists(self, email, first_name = None):
 		if frappe.db.exists("User", email):
diff --git a/erpnext/utilities/doctype/contact/contact.py b/erpnext/utilities/doctype/contact/contact.py
index ae2fdfb..312b0b1 100644
--- a/erpnext/utilities/doctype/contact/contact.py
+++ b/erpnext/utilities/doctype/contact/contact.py
@@ -98,7 +98,7 @@
 	contact_name = frappe.db.get_value("Contact", {"email_id": doc.name})
 	if contact_name:
 		contact = frappe.get_doc("Contact", contact_name)
-		contact.first_name = doc.first_name
-		contact.last_name = doc.last_name
-		contact.phone = doc.phone
+		for key in ("first_name", "last_name", "phone"):
+			if doc.get(key):
+				contact.set(key, doc.get(key))
 		contact.save(ignore_permissions=True)