Originally Posted by
NewbieRunner
If the last segment was within the last 30 days you can still retrieve the passenger receipt online on lufthansa.com.
Information & Service -> Passenger Receipt -> To the Passenger Receipt selection of the past 30 days
It still shows receipts for flights taken years ago... (on bmi, weirdly, and booked on the bmi website. also shows the receipt for my colleague who was travelling with me!)