Copy source project into Purchase Order Item (#13321)

diff --git a/erpnext/selling/doctype/sales_order/sales_order.py b/erpnext/selling/doctype/sales_order/sales_order.py
old mode 100644
new mode 100755
index 180b681..54595b6
--- a/erpnext/selling/doctype/sales_order/sales_order.py
+++ b/erpnext/selling/doctype/sales_order/sales_order.py
@@ -708,6 +708,7 @@
 		target.schedule_date = source.delivery_date
 		target.qty = flt(source.qty) - flt(source.ordered_qty)
 		target.stock_qty = (flt(source.qty) - flt(source.ordered_qty)) * flt(source.conversion_factor)
+		target.project = source_parent.project
 
 	doclist = get_mapped_doc("Sales Order", source_name, {
 		"Sales Order": {