Being that both units are HB ...I think the data should already be in the correct format...

If the receiving unit has an older version of software....
1. Power unit off
2. Insert card
3. Power on unit... Data will be automatically loaded

If the receiving unit has the newest software version...
1. Power on unit...
2. Insert card
3. Answer "Yes" when the unit asks if you want to upload waypoint data..

Rickie