Bingowings said:

The new dove and the stunt replacement were fine but changing the dialogue so that Roy says "father" and says sorry to J.F. changes the dynamic of that scene so radically that I think it undermines the whole film.

I'm pretty sure both "father" and... the other one were both filmed. I have no source for this other than my memory, but I'd heard about the f'er/father thing way before the Final Cut and thought it was interesting. Perhaps it was only shot for TV/Airline use, but my rough understanding is it was something other than that.

Maybe the book Future Noir could be of use here.