fix: patch existing bins

erpnext/patches.txt

@@ -350,3 +350,4 @@ erpnext.patches.v14_0.migrate_cost_center_allocations
 erpnext.patches.v13_0.convert_to_website_item_in_item_card_group_template
 erpnext.patches.v13_0.shopping_cart_to_ecommerce
 erpnext.patches.v13_0.update_disbursement_account
+erpnext.patches.v13_0.update_reserved_qty_closed_wo

erpnext/patches/v13_0/update_reserved_qty_closed_wo.py

@@ -0,0 +1,28 @@
+import frappe
+
+from erpnext.stock.utils import get_bin
+
+
+def execute():
+
+	wo = frappe.qb.DocType("Work Order")
+	wo_item = frappe.qb.DocType("Work Order Item")
+
+	incorrect_item_wh = (
+		frappe.qb
+			.from_(wo)
+			.join(wo_item).on(wo.name == wo_item.parent)
+			.select(wo_item.item_code, wo.source_warehouse).distinct()
+			.where(
+				(wo.status == "Closed")
+				& (wo.docstatus == 1)
+				& (wo.source_warehouse.notnull())
+			)
+	).run()
+
+	for item_code, warehouse in incorrect_item_wh:
+		if not (item_code and warehouse):
+			continue
+
+		bin = get_bin(item_code, warehouse)
+		bin.update_reserved_qty_for_production()