Originally Posted by chrisakavern
I would like a plug-in that deletes the source file from your calibre library after a conversion. I only use one format and have no need for the other formats to remain included in my Calibre library.
Just in case you haven't tried this, I'll tell you how I handle it.
Select all books.
Menu -> Remove Books
-> Remove files of a specific format from selected books..
-> Remove all formats from selected books, except...