Originally Posted by dwanthny
I can confirm that step 3 above does cause the source files to be moved instead of copied to the calibre library directory.
There have been those who were hoping that a Move instead of Copy feature While adding books could be implemented. This would save a step for those who allow Calibre to manage there collection and no longer keep copies of books (other than backups) outside Calibre as it would no longer be necessary to delete the copy external to Calibre. Perhaps this is (accidentally?) e first step towards achieving this