j bridged redo?

Hi,i recentyly had to trash preferences and after a lot of hassle finally(i think) have got the vst instruments back.
the j bridged plugs arent showin tho.
i have scanned and updated plugininfo,and they are in there ok,but not appearing in the vst instrument list for adding.
would i need to rebridge them.
maybe someone has been through this and can advise.