Hi,I've build a VPN tunnel between (ASA 5510) and CISCO ROUTER through internet.The 5510 is  in aggressive mode and the tunnel's up.Often the tunnel is traffic is getting terminated and the application were not working .When am resetting the peer fro...

I have a cisco asa box with version 8.4(6),Have planned to upgrade to 9.3(1).Have read from the release notes & found it should be upgraded to 8.4(7) and then to 9.3(1).My query is do i need to convert the existing nat rules,prior to the upgradation....