Hiya, guys... did you notice sumthing? The house, which Bajaj and Mahesh went to, to visit Nani, was the same one where Apurna lived. In this house, Prem found out about Apurna's motives and all that.
Looks like the producers are running out of studios. The same house is also used for the serial "Kaisa Yeh Pyar Hai".