fix: patch for purchase receipt status
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index aabefb8..1686314 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -763,3 +763,4 @@
 erpnext.patches.v13_0.setup_uae_vat_fields
 execute:frappe.db.set_value('System Settings', None, 'app_name', 'ERPNext')
 erpnext.patches.v13_0.rename_discharge_date_in_ip_record
+erpnext.patches.v12_0.purchase_receipt_status
diff --git a/erpnext/patches/v12_0/purchase_receipt_status.py b/erpnext/patches/v12_0/purchase_receipt_status.py
new file mode 100644
index 0000000..1a99b31
--- /dev/null
+++ b/erpnext/patches/v12_0/purchase_receipt_status.py
@@ -0,0 +1,30 @@
+""" This patch fixes old purchase receipts (PR) where even after submitting
+	the PR, the `status` remains "Draft". `per_billed` field was copied over from previous
+	doc (PO), hence it is recalculated for setting new correct status of PR.
+"""
+
+import frappe
+
+logger = frappe.logger("patch", allow_site=True, file_count=50)
+
+def execute():
+	affected_purchase_receipts = frappe.db.sql(
+		"""select name from `tabPurchase Receipt`
+		where status = 'Draft' and per_billed = 100 and docstatus = 1"""
+	)
+
+	if not affected_purchase_receipts:
+		return
+
+	logger.info("purchase_receipt_status: begin patch, PR count: {}"
+				.format(len(affected_purchase_receipts)))
+
+
+	for pr in affected_purchase_receipts:
+		pr_name = pr[0]
+		logger.info("purchase_receipt_status: patching PR - {}".format(pr_name))
+
+		pr_doc = frappe.get_doc("Purchase Receipt", pr_name)
+
+		pr_doc.update_billing_status(update_modified=False)
+		pr_doc.set_status(update=True, update_modified=False)