fix: payment term when creating PO from SO (backport #41376) (#41744)

fix: payment term when creating PO from SO (#41376)

* fix: payment term when creating PO from SO

* fix: payment term when creating PO from SO

* fix: payment term when creating PO from SO

* fix: payment term when creating PO from SO

(cherry picked from commit 441596f)

Co-authored-by: Nihantra C. Patel <141945075+Nihantra-Patel@users.noreply.github.com>

erpnext/selling/doctype/sales_order/sales_order.py

@@ -1224,11 +1224,19 @@ def set_missing_values(source, target):
 		target.discount_amount = 0.0
 		target.inter_company_order_reference = ""
 		target.shipping_rule = ""
+		target.tc_name = ""
+		target.terms = ""
+		target.payment_terms_template = ""
+		target.payment_schedule = []
 
 		default_price_list = frappe.get_value("Supplier", supplier, "default_price_list")
 		if default_price_list:
 			target.buying_price_list = default_price_list
 
+		default_payment_terms = frappe.get_value("Supplier", supplier, "payment_terms")
+		if default_payment_terms:
+			target.payment_terms_template = default_payment_terms
+
 		if any(item.delivered_by_supplier == 1 for item in source.items):
 			if source.shipping_address_name:
 				target.shipping_address = source.shipping_address_name
@@ -1280,7 +1288,6 @@ def update_item(source, target, source_parent):
 						"contact_person",
 						"taxes_and_charges",
 						"shipping_address",
-						"terms",
 					],
 					"validation": {"docstatus": ["=", 1]},
 				},
@@ -1348,6 +1355,10 @@ def set_missing_values(source, target):
 		target.discount_amount = 0.0
 		target.inter_company_order_reference = ""
 		target.shipping_rule = ""
+		target.tc_name = ""
+		target.terms = ""
+		target.payment_terms_template = ""
+		target.payment_schedule = []
 
 		if is_drop_ship_order(target):
 			target.customer = source.customer
@@ -1383,7 +1394,6 @@ def update_item_for_packed_item(source, target, source_parent):
 					"contact_person",
 					"taxes_and_charges",
 					"shipping_address",
-					"terms",
 				],
 				"validation": {"docstatus": ["=", 1]},
 			},