There is a bug where the sound seuquences defined for a polyobject don't play if you use Polyobj_MoveTo or Polyobj_MoveToSpot. However the sounds DO play if you just use Polyobj_Move.
See the little demo map I cooked up. It also features a section that nicely illustrates why Polyobj_MoveTo is far superior, and less prone to bug's, than just Polyobj_Move. Yeah, stepping into the Polyobj_MoveTo polybojects does mess up the sequence, but they still move to the correct places and not begin to move outside of the map due to them having a sepcific location where they move to.
