These boundaries will not be applied to runoff from a catchment result file (CatchmentResultFiles). Concentrations for those must be specified in Components, or ComponentResultFiles.
The net-rainfall catchment quantity version is special. This requires also HD, because only at that point in time it is known exactly how much rain that falls on the river surface.
public IList<CatchmentComponentSourceBoundary> CatchmentComponentSourceBoundaries { get; }