Advancing off side of map

[Gooseman2448]

Hey,

Can someone refresh my memory about advancing off the side of the map.

I remember in retreat it saves your units.

Does it cost against you any?

In a scenario or campaign, I want to move units from side to the other in an escort type mission.

If I save all the necessary units I want the missin to be over. If all are off will the scenario end like having a decisive decision?

Also, in a campaign can moving them off the map be considered a victory or defeat?

I would like to have it trigger a positive movement.