Well then to be fair you’d have had the same problem if they just changed the start date again. And the last time the start date was changed we only had 18 mont

Well then to be fair you’d have had the same problem if they just changed the start date again. And the last time the start date was changed we only had 18 months to adjust. It’s not like these changes are rare edge cases — it happens all the time. So hopefully as you replace the system you find a vendor who writes good time code!