Sorry, I don't have an answer because I don't use the Master Document
"feature." "Master Document" is a term of art in Word referring to a
"feature" that not only doesn't work but also destroys documents. The
consensus (with the limited exception of Steve Hudson) among those offering
advice on these newsgroups is that using the Master Document feature is a
sure way to destroy your document. It can destroy parts of your document
that you are not even working on! I think John McGhie said it succinctly
when he said that there are two kinds of Master Documents: Those that are
corrupt and those that will be corrupt soon. See <URL:
http://www.addbalance.com/word/masterdocuments.htm> for information on the
Master Document feature and workarounds. (This page also has a link to Steve
Hudson's chapter on how he gets Master Documents to work.) See <URL:
http://www.mvps.org/word/FAQs/General/WhyMasterDocsCorrupt.htm> for more
information on what goes wrong, and <URL:
http://www.mvps.org/word/FAQs/General/RecoverMasterDocs.htm> for ideas on
how to salvage what you can.