I send a lot of work to storm and am very good friends with the lads there, I have had this happen before where I tuned a car with Revo, datalogged it and all was good and then it's come in a few days later with 0-0-0 settings. Odd thing is I've only had it once.
Wonder what the voltage needs to drop to before the ME9 ECU loses the ability to store the data..... (Goes off to find my ME9 tech sheets)