Perhaps, but we would have no way of testing since you neglected to give Outlook/Word version information.

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Milly Staples [MVP - Outlook]
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When I want to clean up an email w/ messy formatting, I use the
'Style' pull-down menu to select "Normal".
The problem is that it only works if I apply a different (not Normal)
style first, then apply Normal.
Put another way it takes two steps: apply random style (say Header 3),
then apply Normal. It does nothing if you apply Normal first.
Strange?