Thank you very much for responding so quickly. An additional query. The Caliber library is organized with folders with the name of the author and subfolders for each work, where the epub file, an image and another file whose extension I don't remember now are. I took out a copy of the entire library to back up, but I had forgotten that I had another, more up-to-date copy. I installed Caliber and configured the library with the old backup version, and now that I found the updated one, I want to add the missing folders. That is, several folders with the names of the authors and their respective subfolders in each one. Does the option you have indicated to me apply to this case?
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