Webalizer and Old Stats

[Jericon]

I'm working on a Dedicated server with Plesk 8.1 for a client of mine. They moved to this server about a month ago and now would like to import all the logs from their old server into webalizer.

I have merged the log files into one log, then attempted to process it after resetting the history and cache, but I cannot get it to process properly.

Any suggestions?