Saving waypoints on Lowrance

I am trying to save 2 waypoints out of 10.
Last night I tried to save #4, #6 successfully to my microSD card.
When I "load from card" it brought back all 10 waypoints.
What's missing here?
Is it capable to do that ?

I could choose to save 2.0 or 3.0 (something about depth) , it did not make a difference. I could not tell any depth when saving.
What's is 2.0 or 3.0 ?

Summary:
- I save only #4, when loading back #4 into the unit, it brings all 10 waypoints.
- What is good when saving as 3.0 ?

Just an update. The rep told me only the HDS unit has a ability to load back 1 waypoint to the unit.
The E-lite series cannot do that. It will load back alllllll waypoints. duh.