If you can see them on the scope it means it is there, but not viewable in TV standards colourspace [rec709 for HD]. So you can't see those 'white' values on a tv/video monitor, hence no detail in shadows.
Using the "restrict" option maps those values above 16 and makes them visible - detail in shadows.
You can raise them up in CC, but would need to do it on a shot by shot basis.



