Converting EndNote libraries
EndNote will automatically convert libraries (.enl) that you created in an earlier version of the software. When you open your library in a new version of EndNote, you will be warned that the selected library was created with older software. You will be asked for permission to convert the file. The conversion makes a copy of the original library in the new format and leaves the original copy. Be sure to keep a copy in the older format if you anticipate using the old software again.