Completion of Redux Concept

That researcher sure did put them in an alternate timeline but he never told the termination condition for it i.e. what would trigger Shivika's return and other people's return too to the current timeline .. He seemed to be adamant on the fact that if Shivika didn't meet at temple in the first instance , then they would never meet again... But see, they did ! So shouldn't Ishqbaaz return to its original timeline..