I have a Garmin Drivesmart 61 and have the same issues.
I wanted to baseline the unit and pushed the speedometer and deleted all of the user settings, and also went to my "saved" button (Heart icon) and used the hamburger (3 horizontal lines) and deleted all saved places, and then rebooted the Garmin unit and connected to Basecamp....well, all the tracks and POI are still there under internal storage?!
Go figure - how the heck can you actually delete this stuff???
Anyone have any ideas??
Thx,
Chris.
Would be better to start a new post as your problem is different, however I'll start here. If you have further questions please start a new thread.
POIs aren't deleted by a master reset. Delete them by deleting the .gpi files in the POI folder.
Tracks need to be deleted using the menu buttons on the device.