We have just upgraded one of our portals to Netweaver 7.5 from 7.0. My question is about the old JCo connections we still have configured in the old Web Dynpro admin area. We do use some legacy applications that use them so is there a way to migrate them to the new JCo setup in NWA or do we have to set them all up again? Do we need to do anything and should we just leave them where they are?