Yes, mine was also for the last top up near the airport before returning the car, none of my other charging sessions during my 2 week trip were listed.Yes, I also had a bill last week from Sixt for supercharging in August 2023, although oddly it only related to the last top up charge I did before returning the car to Munich Airport and didn't include all the rest of the supercharging during the time I had the car.
Maybe more invoices to follow...