Hi,
We are using DOC to DOCX conversion functionality provided by Aspose.Word.java toolkit. We noticed that hyperlinks in WORD2003 document are represented using HYPERLINK field in DOCX format as shown below.
<w:p w:rsidR="00BF15D3" w:rsidP="00BF15D3">
<w:fldChar w:fldCharType="begin" />
</w:r>
<w:r w:rsidR="00773FAD">
<w:instrText xml:space="preserve">HYPERLINK "http://www.google.com/" \h </w:instrText>
</w:r>
<w:fldChar w:fldCharType="separate" />
</w:r>
<w:r w:rsidR="00773FAD">
<w:t>Link to G</w:t>
</w:r>
<w:bookmarkStart w:id="6" w:name="_Hlt192994867" />
<w:r w:rsidR="00773FAD">
<w:t>o</w:t>
</w:r>
<w:bookmarkEnd w:id="6" />
<w:r w:rsidR="00773FAD">
<w:t>og</w:t>
</w:r>
<w:bookmarkStart w:id="7" w:name="_Hlt192994885" />
<w:r w:rsidR="00773FAD">
<w:t>l</w:t>
</w:r>
<w:bookmarkEnd w:id="7" />
<w:r w:rsidR="00773FAD">
<w:t>e.com</w:t>
</w:r>
<w:fldChar w:fldCharType="end" />
</w:r>
</w:p>
As per open XML standard, hyperlinks should be represented using hyperlink element as shown below. I confirmed the same by manually converting a word2003 document to DOCX format using MS word convertor.
<w:p w:rsidR="005D62B1" w:rsidRPr="00FE5428" w:rsidRDefault="005D62B1" w:rsidP="00001DFC">
<w:b />
<w:sz w:val="28" />
<w:szCs w:val="28" />
<w:u w:color="FFFF00" />
</w:rPr>
</w:pPr>
<w:hyperlink r:id="rId11" w:history="1">
<w:r w:rsidRPr="005D62B1">
<w:rStyle w:val="Hyperlink" />
<w:b />
<w:sz w:val="28" />
<w:szCs w:val="28" />
<w:u w:color="FFFF00" />
</w:rPr>
<w:t>Link to Google.com</w:t>
</w:r>
</w:hyperlink>
</w:p>