You need to set the Lip to the correct number to get it to move where you want.

If the Lip is 10 then the door will move until it intersects with its old position by 10 units.

If you set Lip to zero, the door will move exactly one of itself.

If you Lip to 600 then the door will move until there are 600 units between itself and its old position.

For an elevator, you might want to use a func_train. It has more options than func_door but is harder to use.