Neither infertility nor prenup it's saurav business

We were all expecting separation for sure but many expecations were from infertility or pre nup or may be mixture of both but it's saurav's business which made this separation. Cv's haven't used infertility as they wanna show ishwari mahan. I still doubt whether like khatri had they forgetten prenup. What's the use of it. Infertility will only be used for redemption of ishu nd dev becoz as we all know sona will be getting pregnant. I think pre nup will be for dev's eye opener. But really excited nd confused abt further track. What's in their mind.

Can ishwari somehow use prenup differently... when dev s business go down and sona's is a super rich woman? :p