Clipping plane issues

I am having issues with the clippingplane vanishing after closing a 3dm file. It seems that after I save the file and close out of the file and reopen that file the clippingplane is ‘lost’ … I wish there were a panel like named views that displayed the files clipping planes. I suppose I have to remember to delete the clipping planes before saving and closing my documents. Or perhaps it is user error?

Ok. I just created a new layer to move a new clippingplane to and it vanishes.

Hello - clipping places should hang around like any other object - does your display mode have them enabled, for visibility?