Ho do I integrate IIS 5 logs with IIS 6 where PLESK is running

[ditonth]

I need to transfer statistical results which I had on my IIS 5 Server (without Plesk) to IIS 6 with Plesk. I have tried copying the log files from one server to another to their respective \LogFiles Folder in System32 but on the next Statistics execution, the old statistics where not merged.

How can I get about this problem?