for some reason I decided that the best way to keep everything under control was to make a copy of the files that I changed and put them, with another name, in the same folder as the rest of the files of the theme.
what happens now is that when I go to the editor, only the backup (with its modified name) shows up under the list of files to edit. And that continues to be the case even after I move all these files in a different folder (which I called backups)
any clue on how to solve the little mess?
thanks in advance
this does not have any effect on the aspect of the website, but just in case
I modified the index.php and the page_blog.php and the footer.php