In the course of revising an authority record I added a form of personal name that uses an at symbol (@):

 100 0- Barbara Jean, $d 1943-
 400 0- Barbara@Jean, $d 1943-

According to the NACO normalization table here:
such symbols are "retain[ed]" and therefore seem to be treated like any other active character.  But when uploading the record to the NAF, I get an error message that the "cross reference matches the [100 field] heading."  Is there a way around this short of either removing the 400 or using (if this is kosher) a bracketed "at"?

Mark K. Ehlert                 Minitex
Coordinator                    University of Minnesota
Digitization, Cataloging &     15 Andersen Library
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Phone: 612-624-0805            Minneapolis, MN 55455-0439

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