One thing that makes it difficult to maintain the Yacreader library is the fact that, when I delete a comic, the cover remains in the database folder, and I have to delete it manually. Imagine in a collection with more than 10,000 comics how hard it is to find a simple cover. It would be extremely welcome if the covers were also automatically deleted when the corresponding comic was deleted. The same happens when you replace the comic with another of the same (for example, when the second has a better resolution than the first). The program generates a new cover and I have to search and manually delete the obsolete cover.
The effect is the same. Do the test and you will find out. Whether you update or delete, the program will create as many cover files as the number of such processes you perform.
YACReader
