Some databases import only the abbreviated journal name while your style may call for the full journal name – and vice versa.
Let EndNote solve the problem! EndNote provides a Journals Term List, so the journal names in your bibliography are either the full name or the abbreviation, as your style requires without you manually changing the name!
In EndNote, go to "Library > Open Term Lists > Journals Term List".
If the Journal Term List is empty, skip to step 4. If not, highlight the first journal, and press [Ctrl]+A on the keyboard to highlight all the terms (on a Macintosh, this would be [Command]+A).
Next, press the "Delete Term" button to the right.
Now go to the "Lists" tab at the top, and click on the "Import List" button.
Browse to the Term Lists folder within the EndNote folder, and choose the correct subject file(s)
If you are on a Windows machine, this folder should default to:
C:\Program Files\EndNote (EndNote Version Number)\Term Lists
If you are on a 64-bit Windows machine, this folder should default to:
C:\Program Files (X86)\EndNote (EndNote Version Number)\Term Lists
If you are on a Mac, this folder should default to:
Hard Drive: Applications: EndNote (EndNote Version Number): Terms
Choose the correct subject file (s) in the Term List (example: "Medical" for medical/health journal titles)
This will import the correct abbreviations and full journal names for those subject journals. You may have to repeat these steps to do more than 1 terms list, as there are multiple.