Your map chip or nav,hot map chip will not or cannot store waypoints your internal memory on your unit does.
You do not need a PC cable to access your waypoints in your head unit you will need a blank sd card and a working
pc with HB PC program.Put your card in the head unit hit menu menu go to Nav.cursor down to export all nav.data
Now take the chip with your waypoints and put it in your card reader with the HB PC program up and running
you will see your card come up under the pc image there are 3 arrows upload, download,and exit or eject
upload to the PC when finished they will be on your pc click on + buy waypoints they will show up.I suggest
you read the help topic top of screen.Your on your way. Gary