Keep Detailed Navigation Open in Consumer Portal

Hi Experts,

We consumer and producer portal and RRA is implemnted for FPN. Our PCD objects are kept in Producer portal.

My Requirement is to keep the detailed navigation open. we dont have page hence iview property"Initail state of navigation panel " is kept open in producer portal. But even after FPN Cache the detailed navigation in collapsed.

Kindly advise.

Consumer is 7.0 version and producer is 7.3 version.

Regards,

V Karthi