Restore Paragraph Styles to Defaults?

If I have a document whose Paragraph Styles do not correspond with my defaults, and I want to “restore” it to those, can it be done?

There’s a “Revert to Factory”, but I’m assuming that’s different.

Hmm, I don’t think so. It’s akin to trying to retrofit an existing project with your default engraving settings.

I think this is a job for “Import Flow” or his relatives.

Yes, I suppose if you were using non-default new Styles in that document, then you wouldn’t want to delete them, but perhaps any style with the same name could be overwritten.