I was keeping my library in my google drive folder.
I read about the possible problems (I have not had any problems), so I used Calibre export all/import all to copy the library to an external hard drive. Then I planned to use the mirror function of FreeFileSync to keep the google drive copy current. This showed me that Calibre does not export/import the .opf files. FreeFileSync wants to delete all of them from my google drive folder. Is this okay? Was I supposed to tell Calibre I wanted the opf files also?
I've read all I can about opf files and it seems Calibre only adds them when it adds a book? But for some reason it doesn't need them anymore? It's a really big library and I want to make sure.
Thanks