Changing the Style definitions won't delete Styles named in the form <style name> + condensed <number>. You would have to delete those Styles. To do that, though, you'd probably want to reapply each <style name> without the 'condensed' part to all affected content in the document; otherwise deleting the Styles named <style name> + condensed <number> would see all their content revert to the Normal Style.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]