If JW has to be redeemed, he better not be the father of Pia's trash.If Bani asks him to marry Pia now, then
there is no use of leap and even if JW refuses to marry Pia now, won't Bani pressurize him to marry Pia post leap.If she can do it now than why not after the leap, there can be no reason for her not to do that.
The DNA report will probably show JW as the father but it will be a morphed report and then as predicted by all of us once Bani mata leaves, Jigs will tell JW that nothing happened in Dubai and that Pia was planning it all.