Beware!! My recollection on this is somewhat hazy and the point may not apply with a PRSA pension - others can advise on this.
Several years ago, I think, subject to correction, it was Loctite, split their pension fund, forming a new scheme for managers. The problem, I believe, was that the managers fund significantly depleted the main fund, leaving chicken feed for the majority. The issue was dragged through the courts - don't recall the outcome.
As I said at the outset, this issue may not apply here. If it does, protect YOUR asset.