Why was Rituparna Sengupta replaced with Mita Vashisht in 'Rahasya'?

Adds Gupta, “After assigning her dates, she started pressurising me to cast her opposite Kay Kay Menon as his wife. But I had already cast Usha Jadhav for that role. But she kept insisting that I change her casting, but I refused.” Unit sources state to add to their woes she would also arrive late on the sets.u00a0