Is it possible to open windows generated from netbeans in Window Builder?

Second this response obtained in SOEn, is not possible, due to the way that each IDE generates these files that manipulate the screens. The solution would be to rewrite all the screens, but it was not necessary. I was able to open the screen by the .java class itself, through a way of changing the way the window builder generates the screen codes, when it is being created through drag 'n drop .