Aside from the obvious (Karan and Abha being together and away from it all for a short while), I think it allows families to move forward and come to terms with a new reality.
It would be something if K & A moved into his old house (was that the one each dreamt of living together in in earlier scenes, e.g. Abha imagining K everywhere?). Perhaps I'm mistaken.
Happily looking foward to the next few episodes.