Unfortunately, you can't. If you need to move data from one type of label to
another, aside from laborious copy/pasting, your best bet is to convert the
table to text, regroup, and then convert back to a table. But if you're
going to do this anyway, you might as well convert the data to a data source
for a mail merge; that way you can reuse the data in any type of label,
envelopes, letters, etc. See
http://www.word.mvps.org/FAQs/MailMerge/ConvertAdrsToDatafile.htm
