Template:FuncMoveLinear notes
From Valve Developer Community
Note:The SetPosition input and Start Position keyvalue do not perform any bounds checking, so values less than 0 and greater than 1 can be used. Negative values will move in the opposite direction to the movement direction, and values greater than 1 will move it in multiples of the set Move Distance. Moving past the opened/closed position does not trigger the OnFullyOpen and OnFullyClosed outputs.
Bug: There are bugs that may arise when parenting this entity to any of these: func_movelinear, momentary_door, func_lookdoor, func_water_analog. A func_door can be used as a workaround. See here for a code fix. Bug: In 
, parenting a move_rope or keyframe_rope will cause the entities to disappear. Clarification required if the rope entities are deleted or are simply not rendered.