Word doesn't allow more than one definition of a Style in a document, so whatever is happening reflects either a variation with a different (e.g. miss-spelled) Style name or that someone has overridden the Style with hard-formatting.

Selecting the affected paragraphs and pressing Ctrl-Q will remove any non-standard paragraph-level attributes (e.g. indents) and Ctrl-Space will remove any non-standard font attributes.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]