why did jhalak timings change?

Isn't jhalak supposed to air at prime time slot of 9pm ? Y is it aired at 10 O clock yesterday ? Jhalak is a trp fetching show than 24 no ? Will it air at same timings for the whole season ?
This year jhalak is very disappointing with no audience voting.Even the celebs are not that interesting compared to others seasons.But I like some of them like shantanu,shakti.