So, to this point, much of the how and why of An Author’s Inspiration is superficial and mechanical. As the saying goes, however, the Devil’s in the details—so is the inspiration of developing character, plot and story-line.
Once story.plot has had all traces of Harry Potter characters by name removed, then their character files can be removed from the work folder. This instruction is also mechanical in nature, but it reduces the clutter of their hanging around in the outline and distracting you from your own work. Run An Author’s Inspiration to confirm the removal of all these character files has resulted in a generated outline containing only your characters.
However, removing these files may not remove all traces of the old Harry Potter characters from the outline. That is because they probably live on inside your character files that were copied to your purposes. That is, your heroine of Francesca may still follow Dumbledore, she may, in turn, be followed by Ron Weasley, and so on. These old characters (now unsupported by character files) persist because you will not have adequately edited the contents of Francesca.character. These rough edges survive and do nothing to derail the generation of the outline, but neither do they move the plot forward.
The take-home is that a lot of debris from the old outline lives on, but is easily changed to match your vision of your character in your plot design of your original story. This is done in field edits of the Francesca.character file and story.plot.