Update rename_att_date_attendance.py
diff --git a/erpnext/patches/v7_2/rename_att_date_attendance.py b/erpnext/patches/v7_2/rename_att_date_attendance.py
index 78d3220..f7caf70 100644
--- a/erpnext/patches/v7_2/rename_att_date_attendance.py
+++ b/erpnext/patches/v7_2/rename_att_date_attendance.py
@@ -4,11 +4,11 @@
 def execute():
 	if "att_date" not in frappe.db.get_table_columns("Attendance"):
 		return
-	frappe.reload_doc("HR", "doctype", "attendance")
+	frappe.reload_doc("hr", "doctype", "attendance")
 	frappe.db.sql("""update `tabAttendance` 
 	 		set attendance_date = att_date
-			where (att_date is not null or att_date != '') and (attendance_date is null or attendance_date = '')""")
+			where attendance_date is null or attendance_date = '' or attendance_date = '0000-00-00'""")
 	
 	update_reports("Attendance", "att_date", "attendance_date")
 	update_users_report_view_settings("Attendance", "att_date", "attendance_date")
-	update_property_setters("Attendance", "att_date", "attendance_date")
\ No newline at end of file
+	update_property_setters("Attendance", "att_date", "attendance_date")