Hi Yegor
”How to add new photos to a project without recalculation of the whole project?”
I am not sure about this, but if you mean adding “missing” images, then you need to realign and reconstruct again.
If some places are missing, then it is the problem with a proper capturing scenario, you just need to make sure that you do not forget the ”obstructed (occluded)” or “missing” parts of the model.