Tim one of the improvements made some time ago by Castle Creations was to implement auto erasure of the logs. From the current Phoenix Edge Lite manual. Might want to check if this is a configuration thing. The Castle's that I had some time back did not have this and each motor had to manually erased. It was a pain. DATA LOGGING Use Castle Link software to modify data logging settings. The capabilities are briefly described below. See the help files and on screen instructions in Castle Link and Castle Link Graph Viewer for complete details. *Duration of recording The ESC writes the recorded data to a limited amount of memory. Recording time varies with the data points selected and the sample rate. the ESC compresses data wherever possible; periods at IDLE or constant throttle do not take very much memory. Use the Castle Link software to select or remove values from the data logged by the ESC. Automatic Data Reset At power up, Automatic Data Reset checks the amount of memory used. If that value is more than the programmed limit, the controller will erase the entire data log. This ensures that the last few runs are saved to memory and available for analysis.