R.e. Luke's "Father, please," that comes some moments before Darth's "Noo. Nooooo!" line. I haven't watched the rips, but based on previous versions of these movies it would not be necessary to remove Luke's line in order to add Vader's line. In other words, the order of lines/events in the original scene is:

"Father, please."

"Now, young Skywalker, you will die."

More force lightning.

Vader tosses Palps.

But, adywan and others have watched the rips, so if it's true then it makes no sense at all to me. Those two lines come at different moments.