Making a copy of your data file
You can always make a copy of your TimeCache data file by using the Finder's Duplicate command.

Another way of doing it is to choose File>Save Copy As.... In the dialog box that appears, name the file and show TimeCache where you want to save it. Be sure you save it in a different folder or use a different name than your data file's name. TimeCache copies all the data in your file into the new file, without any of excess information that may have accumulated in your original data file over time.