I feel makers feel that KN not working for them as it was before.
After banduva track,they did a lot with him and like Sai sir said he trying to kill Chakor for more than 3 years now and not succeeding so may be they feel his tracks getting repetitive and boring audience.
And their lucky charm Imli working for them,Vidhi was proud of increasing ratings after she turned negative.
And when sisters fighting, I feel somehow it connect with audience too.
And about Sukor,audience are still loving them as it's perfect example was reunion sequence, they reached to top 5 after a long time.
I hope CVS realise it and I feel they may be thinking that it's emotional scenes of Sukor are clicking more with audience than romantic scenes so that they coming up with separations and emotional reunion sequences one after the other.