I’m not 100% sure because I don’t save tracks ...
*Is the saved tracked listed in the 999 in the left pane of Waypoint Management? (Under Nav tab/Waypoints Routes Tracks) ...
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I would think Exporting all Nav data to a SD Card and loading that Nav data into the other unit should transfer all the Nav data - including saved tracks ...
Maybe someone with more experience in tracks will jump in ...
Rickie