Some journals require the use of journal abbreviations for references. If you might ever need to use a citation style that requires journal abbreviations, then before adding any references to a new EndNote library, import a Journal Terms List as described below
First, disable automatic updating of journal terms when downloading references from databases.
Edit --> Preferences --> Term Lists --> Uncheck these two options …
Update lists when importing or pasting references
Update lists during data entry
The importance of this step cannot be understated! This will prevent the addition of “bad” information about journals to your Journal Terms when new references (with “bad” journal data) are added to EndNote.
Second, import a journal term list.
If you have already added references to your EndNote library, the easiest thing to do is to delete the existing journal terms and import a Journal Terms list as described above.
Tools --> Open Terms Lists --> Journals Term List --> Highlight all journal terms --> Delete Term(s)
When you add a reference for a journal that is not on the journal terms list, you can create an entry for the journal.
Tools --> Open Terms Lists --> Journals Term List --> Terms tab --> New Term --> Fill in journal title and abbreviation information as needed