[Jabref-users] author's name order

[Mélanie T. <me...@ya...>]

Hi,
I want to merge an existing database.bib (created in JabRef, mostly with 
Pubmed search) with a RIS file.
Authors in this file are listed as :
A1  - Last name, First Name

Importing in JabRef is fine but give this "Last Name, First name" 
pattern. All my others entries are "First name, Last name". It causes 
problem as duplicates are not detected at all.

How I can solve the problem? Does it coming from my imported file or 
from Jabref?
Thanks,
Melanie
PS I also tried with importation in .bib, and it's the same result.