Depending on the reason a vehicle goes to its main dealer, an ECU update could be applied. This will most likely erase any ECU tuning previously done.
But don't worry! As a slave user, a new file will be prepared based on the updated SW version, completely free of charge! This can be done through the file history: simply search for the related vehicle and send us a quick message, the engineer in charge of your file will get back to you asap.
If on the other hand you are using our platform as a master user, you will have to send a new file request.