If I manually add a new subfolder named "Legalización test" to that parent folder, I can now see 2 subfolders ("Legalización - automática" and "Legalización test").

I don't know if I'm doing something wrong or what. Could it have something to do with the last modified time? The missing "Legalización" folder was last modified over 6 months ago, is the search able to search that far back?
Thanks