XSLT on XML Get parent Value from a mixed Node - xslt-2.0

Question

I have an XML with some mixed Nodes,and I want to get just the value of the parent and not the child.
My XML
<?xml version="1.0" encoding="UTF-8"?>
<Records>
<DET>
<detnumber>100126</detnumber>
<EmployeeNo>100126</EmployeeNo>
<action>CHANGE</action>
<first_name> NewHire-4th
<previous>NewHire</previous>
</first_name>
<last_name>Test-Changed 4th
<previous>Test-Changed 3rd</previous>
</last_name>
<birth_name>
NewHire-Changed 4th
<previous>NewHire-Changed 3rd</previous>
</birth_name>
<formal_name>
NewHire-4th Test-Changed 4th
<previous>NewHire Test-Changed 3rd</previous>
</formal_name>
<salutation>
MISS
<previous>MRS</previous>
</salutation>
<email_address>
testHire4#gmail.com
<previous>testHire2#gmail.com</previous>
</email_address>
</DET>
</Records>
Using XSLT 2.0 ,
I am mostly using copy of in my xslt, But the whole Node and its child are being copied. I need to be able to restrict only to the parent.
<xsl:copy-of select="first_name"/>
<xsl:copy-of select="last_name"/>
<xsl:copy-of select="birth_name"/>
<xsl:copy-of select="formal_name"/>
<xsl:copy-of select="salutation"/>
Below is my preferred output
<?xml version="1.0" encoding="UTF-8"?>
<Records>
<DET>
<detnumber>100126</detnumber>
<EmployeeNo>100126</EmployeeNo>
<action>CHANGE</action>
<first_name> NewHire-4th</first_name>
<last_name>Test-Changed 4th</last_name>
<birth_name>NewHire-Changed 4th</birth_name>
<formal_name>NewHire-4th Test-Changed 4th</formal_name>
<salutation>MISS</salutation>
<email_address>testHire4#gmail.com</email_address>
</DET>
</Records>

Answer 1

Check this Code:-
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" indent="yes"/>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="previous"/>
</xsl:stylesheet>