Copy using a common key value in XSL - xslt-2.0

Question

Here is my source xml which I am struggling to transform using XSLT 2.0.
The application that I'm working on, support XSLT 3.0.
Any help is appreciated using xslt 2.0 or xslt 3.0. Thanks
<empID> is the common key to be used for look-up.
Source XML
<?xml version="1.0" encoding="utf-8"?>
<MasterFile>
<Summary>
<Workers>
<WorkerSummary>
<EmpID>83921</EmpID>
<Name>amitzner</Name>
<Title>Executive Assistant</Title>
</WorkerSummary>
<WorkerSummary>
<EmpID>65291</EmpID>
<Name>akapoor</Name>
<Title>Senior Network Engineer</Title>
</WorkerSummary>
</Workers>
</Summary>
<Payroll>
<Employee>
<Employee_ID>83921</Employee_ID>
<Payroll_ID>80034</Payroll_ID>
<OtherIDs>27239</OtherIDs>
<OtherIDs1>27215</OtherIDs1>
</Employee>
<Employee>
<Employee_ID>65291</Employee_ID>
<Payroll_ID>85934</Payroll_ID>
<OtherIDs>23912</OtherIDs>
<OtherIDs1>29321</OtherIDs1>
</Employee>
<Employee>
<Employee_ID>87196</Employee_ID>
<Payroll_ID>86089</Payroll_ID>
<OtherIDs>67896</OtherIDs>
<OtherIDs1>37891</OtherIDs1>
</Employee>
</Payroll>
<Employees>
<Employee>
<empID>83921</empID>
<LocalJuris>NYCRes</LocalJuris>
<City>New York</City>
</Employee>
<Employee>
<empID>65291</empID>
<LocalJuris/>
<City>Houston</City>
</Employee>
<Employee>
<empID>98218</empID>
<LocalJuris/>
<City>Boston</City>
</Employee>
<Employee>
<empID>87196</empID>
<LocalJuris>NYCRes</LocalJuris>
<City>Dallas</City>
</Employee>
</Employees>
</MasterFile>
Expected Output
<?xml version="1.0" encoding="UTF-8"?>
<MasterFile>
<Employees>
<Employee>
<empID>83921</empID>
<LocalJuris>NYCRes</LocalJuris>
<City>New York</City>
<Name>amitzner</Name> <!-- This needs to be copied from Summary/Workers -->
<Title>Executive Assistant</Title> <!-- This needs to be copied from Summary/Workers -->
<Payroll_ID>80034</Payroll_ID><!-- This needs to be copied from Payroll/Employee -->
<OtherIDs>27239</OtherIDs><!-- This needs to be copied from Payroll/Employee -->
<OtherIDs1>27215</OtherIDs1><!-- This needs to be copied from Payroll/Employee -->
</Employee>
<Employee>
<empID>65291</empID>
<LocalJuris/>
<City>Houston</City>
<Name>akapoor</Name><!-- This needs to be copied from Summary/Workers -->
<Title>Senior Network Engineer</Title> <!-- This needs to be copied from Summary/Workers -->
<Payroll_ID>85934</Payroll_ID><!-- This needs to be copied from Payroll/Employee -->
<OtherIDs>23912</OtherIDs><!-- This needs to be copied from Payroll/Employee -->
<OtherIDs1>29321</OtherIDs1><!-- This needs to be copied from Payroll/Employee -->
</Employee>
<Employee>
<empID>98218</empID>
<LocalJuris/>
<City>Boston</City>
</Employee>
<Employee>
<empID>87196</empID>
<LocalJuris>NYCRes</LocalJuris>
<City>Dallas</City>
<Payroll_ID>86089</Payroll_ID><!-- This needs to be copied from Payroll/Employee -->
<OtherIDs>67896</OtherIDs><!-- This needs to be copied from Payroll/Employee -->
<OtherIDs1>37891</OtherIDs1><!-- This needs to be copied from Payroll/Employee -->
</Employee>
</Employees>
</MasterFile>
I'm able to copy some of the nodes but having hard time getting the output that I expect to produce with below XSLT
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs"
version="2.0">
<xsl:output omit-xml-declaration="yes"
indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="LocalJuris">
<xsl:copy-of select="."/>
<Name>
<xsl:for-each select="../../../../MasterFile/Summary/Workers/WorkerSummary">
<xsl:value-of select="Name"/>
</xsl:for-each>
</Name>
</xsl:template>
<xsl:template match="Summary|Payroll">
</xsl:template>
</xsl:stylesheet>
I tried using xsl:key as suggested by Martin Honnen which returns following.
Could anyone please help me figure out what i am missing ?
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs"
version="2.0">
<xsl:output omit-xml-declaration="yes"
indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:key name="emp" match="Summary/Workers/WorkerSummary" use="EmpID"/>
<xsl:key name="emp" match="Payroll/Employee" use="Employee_ID"/>
<xsl:template match="EmpID">
<xsl:copy select="key('emp', empID)!(Name, Title, Payroll_ID, OtherIDs, OtherIDs1)"/>
</xsl:template>
<xsl:template match="Summary|Payroll">
</xsl:template>
</xsl:stylesheet>

Answer 1

Use e.g.
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="3.0"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="#all">
<xsl:key name="emp" match="Summary/Workers/WorkerSummary" use="EmpID"/>
<xsl:key name="emp" match="Payroll/Employee" use="Employee_ID"/>
<xsl:mode on-no-match="shallow-copy"/>
<xsl:template match="Payroll | Summary"/>
<xsl:template match="Employee">
<xsl:copy>
<xsl:apply-templates select="node(), key('emp', empID)!(Name, Title, Payroll_ID, OtherIDs, OtherIDs1)"/>
</xsl:copy>
</xsl:template>
<xsl:output indent="yes"/>
<xsl:strip-space elements="*"/>
</xsl:stylesheet>
Online sample is at this link.