display missing books in a series
Hello. Is there a way, where i can find out what books from a series are missing? Please assume, that i have some series in my librarie. Maybe there is one series from book 1 to book 22. the books 3, 17 and 21 are missing. In a other series the books 2 and 5 are missed. Now i want a way (via search or plugin) to display exactly the numbers of this missing books and the name of the series. Can anyone help with this task?
Background is: I have massimportet around 5000 entrys in my database and manualy retagged and corrected them in the last days. It was a horrible job. Now i found out, that some books in the series are missing, but i havent the time to check them all manualy.
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