I ran into the same problem: All the variable values cleared, and I'm not sure why (could have been due to poor connectivity between my PC and the server since I'm on ISDN in Italy connecting to web server in the States).
It was so bad that I FTPed the original config pal back up to the server, editted it again from the IIP editor page, and then backed up the config pal once I got it to work.
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