The checkboxes in Configuration Context editor actually modify the Context rules. It can be confusing with the PSB behaviour where the part are just hidden from the visualizaiton tab. Especially when editing huge contexts, it wll be usefull to hide some parts from the Vizualization tab ONLY. So the checkbox behavior will be similar to PSB and these parts will be keept in the Configuration Context.
Expected behaviour for editing a Configuration Context
A new column can be introduced to control the rules inclusion status. The action to include/exclude part is still available from the right mouse button.