Reply To: How to reapply styles to get rid of local formating automatically?

That looks great (especially if you had lots of stories), but don't forget that there is already a feature in InDesign designed to do this for an imported story: The Clear All Overrides button at the bottom of the Paragraph Styles panel. Just select all the text and click it.

If you need more fine-tuned control over what formatting is saved and what is removed, you might consider looking at the Remove Local Overrides feature in the Blatner Tools suite (blatnertools.com)