Edge piping and shutlining disappearing

The tools "edge piping"and “shutline” are loosing their properties from time to time, I suppose when a Rhino file has crashed(?)

Not only is it hard to notice some of these things and when rendering, you might end up redoing quite some renders, also, for shutlining, which takes a lot of time to calculate in the first place, you’d need to go through a new loop of calculating which can become a big loss of time.

Can this be looked into? These tools are supposed to be time-saver short-cuts to modeling, but in this case, you might well be better off having actual geometry modeled. At least it’s there to stay…