If I export

if I exportWay Points, routes and tracks from the unit to the Zero line SD card, Will I damage the card or lose criticle data on the card? I get a dialog box asking me to confirm!! Save tracks, wp and routes to SD, overwriting ALL TW&Rs on the MMC/SD card. Yes/NO. I have been exporting to blank SD card and get the same Confirm message. I do not lose any existing data on the plain SD card.

No. Waypoint files and track files are stored in a MATRIX folder, sonar recordings are stored in a RECORD folder. Autochart map files are stored in the LkMaster and AC folders.