The way the Default button makes the change for new documents is by altering
the definition of the Envelope Address style in the Normal.dot template. As
explained in
http://www.shaunakelly.com/word/templaterelations/index.html,
when you create a document (or an envelope) from a template, the document
inherits the template's styles, and then the connection is severed -- any
later changes in the template will not be carried forward into the document
unless you take a specific action to force an update.
To change the style, and thus the appearance, of existing envelopes, you
will have to modify the Envelope Address style in each existing document (or
use a macro to open each document in turn, change the style, and save/close
the document).
On the computer where the changed default did affect an existing document,
the style might be marked with "Automatically update". However, that's a
dangerous setting, as explained in
http://www.word.mvps.org/FAQs/Formatting/WholeDocumentReformatted.htm.
--
Regards,
Jay Freedman
Microsoft Word MVP
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