Authors display in library

In my library, I have authors entered both Last Name, First Name and First Name Last Name (see screenshot for visual). This is not a problem when entering citations of course, but I’d prefer all my entries to read as Last Name, First Name when viewing my library. Is there a way to modify all the items that read First Name Last Name and avoid doing it manually?
EN_author.jpg

Thanks for the response, Leanne, even though it was one I feared. This strangely seems like a relatively new occurance, and to add to the oddity, I don’t remember seeing authors in this format until I placed the Research Notes field in front of the author field. That couldn’t have switched the author name order, could it?

Hi, I’ve the same problem with my library since I installed endnote web.

I’ve tried to export my library and the problem is not solved when I export it in compressed library or XML format.

When I export under txt or html format then the author list is uniform (Name, Firstname) when I read it with a text editor but I am not able to import such file to rebuild my library in Endnote. I guess the problem is that there is no info about the different fields of my references. So is it possible to export a library in txt format and to re-import it in a new blank endnote library?