Lately I have been working some more with UE4(.10/.11/.12). And there is one big thing that I am missing right now, the abiltiy to reparant a class from outside the blueprints editor, because opening it will crash the editor. I ran into this problem because I deleted my C++ parent class but forgot to reparant my blueprint classes before deleting my C++ files. Luckely I just made myself a backup before I deleted these files. But I still think that this is a major issue. What I would like to see is the option that if you right click on a file you get a option to reparent.