I've had this problem from day one of ASL 3 and now I get the same thing on 4.00...
I save a config back file that has a webadmin port set to something other then the default. I load 3.XX again OR 4.00 and import the config file. Everything is fine until I logout and log back into Webadmin where I get "this page can not be displayed" errors in IE on the default 443 port and the SSL port that I put in. So I'm affectively locked out of the WebAdmin of the firewall.
I can get around this by installing ASL and then setting the SSL port to the same as it is in the backup file and THEN importing it. This happens on every firewall I have ever tried to import on, no matter what version or hardware.
thanks!
Benjamin Van Hoesen