A family of Microsoft word processing software products for creating web, email, and print documents.
Word adds a hidden bookmark around the caption when you insert the cross reference.
It's a bit of a mess to fix it, as the Add Bookmark dialog does not let you work with those.
But you can use my Bookmark Manager to set it the way you want. Read the help file for instructions.
See http://insight.trueinsight.za.com/word/word-utilities/
b.t.w. the uTIlities contain a tool that adds a new oMath equation to your document. Description of the process here:
http://insight.trueinsight.za.com/numbered-equations-in-word/