Configuration File $global.setup.file was not readable (missing or
   not valid)! [1]: xs:string:
   file:///D:/Empic/workspace/EmpicSuite-trunk/empic-suite/resources/xml-resolved/GlobalSetup-resolved.xmlx
   Error on line 52 of
   file:/D:/Empic/workspace/EmpicSuite-trunk/empic-suite/script/xsl-functions/profile-filter.xsl:
     XTTE0570: Required item type of value of variable $global.setup is
     document-node(element(global-setup)); supplied value has item type
   xs:string

   Error at xsl:variable on line 52 column 212 of profile-filter.xsl:
     XTTE0570: Required item type of value of variable $global.setup is
     document-node(element(global-setup, xs:anyType)); supplied value
   has item type xs:string

I don't understand the difference between two ways of loading an XML file into a variable (see A and B below). Case A used to work with old saxon 8.9, but with 9.2 only B is successful.

I would expect B to fail in the case that the file is not there (If you have defined $global.setup.file) as in A

you then have effectively

 <xsl:variable name="global.setup"
 as="document-node(element(global-setup))">
    <xsl:copy-of select="$global.setup.file"/>
</xsl:variable>

and the type xs:string doesn't match document-node()