If you want to keep a permanent record of the current Caller Log, you can export the log contents to a SimpleText file, a word processing program delivered by Apple. Once in SimpleText, it can then be saved in a word processing format of your choice.
To export the Caller Log to a SimpleText document:
Display the ICM Caller Log by clicking the Caller Log icon on the ICM Main Window:
The Caller Log will open:
Click the Export button.
Apple's SimpleText application opens and containing the current Caller Log. The file is by default named export.log:
This can be saved or manipulated within SimpleText.