I too thought it could be a replacement for that scene OR they add a subspace comm scene between the crew and earth to explain, better, some plot point. Would make sense if while editing they realized there is some plot hole, or maybe they had to cut some scene for pacing issues but they need to replace them with an alternative that does fit with the cut they now have.
Some are speculating that the bad reaction for the trailer made them reconsider the movie having too much action scenes and now they add more character moments to balance things better. I'm doubtful ( and most of the actors are not available right now/filming other thing anyway)
The only thing I hope is that that realized some things to fix and will do that till they still can. I hope reshoots won't end up being of the bad kind that changes some plot points for the worse, or makes the movie lose great scenes.
For the movie 'I'm legend' reshoots and test audiences damaged it lol
(Stupid) test audiences didn't get the original ending so they completely changed the ending that made more sense for the book and also some plot devices and hints in the movie. By changing the end they basically changed the meaning of the title (Will Smith's character is 'legend' because he is considered a bad guy by the creatures as he keeps capturing their people and kill them. He wasn't legend because he finds the cure. The original ending was supposed to 'switch' roles and surprise, it has more depth and is, again, more similar to the novel. The definitive ending is predictable and turns the movie into another movie about a doctor finding a cure or someone saving the world like the one with Brad Pitt with the zombies. The idea he got the 'new humans' all wrong and he is the bad guy while trying to save them was far more interesting to me)