You can find out where your logs are stored if you go to tools > options > messages...under "message history" it tells you where they are and you can change that folder to wichever one you want (if MSN logging is enabled).
Plus! Logging: Plus > preferences > logging..Under "chat logging" you will see the folder that Plus! uses to save chatlogs, this folder you can change to wichever one you want too.
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