Error in field "REF" Word2000 vs Word2003

[KatM]

I receive documents that are created by someone else (and I do not know what version docs are created with).

Occasionaly we receive a document that appears as follows in Word2003:

{ REF _Ref93908553 \h } which appears correctly as "Fig. 1" when the field codes are toggled.

But when the document is opened in Word2000:

{ REF _Ref93908553 \h } is still the field code, but "Error! Reference source not found." appears in the document (The text of "Fig. 1" which is really what we want, but it is lost.)

I know that as long as we stay in Word2003 I will be able to see the text desired - but we are primarily working with Word2000 and I need to know why we are getting the error with Word2000. It seems as though the field of "REF" is valid in Word2000 so I don't know why this won't work.

Thanks.