I would try to set the output file to UTF-8 mode, at least that's how I did it with XML::LibXML:

my $outfile = "config.xml";
open my $xml, ">:utf8", $outfile
    or die "Couldn't create '$outfile': $!";
# Alternatively:
# binmode $xml, 'utf8';
print {$xml} $xp->find('/conf')->get_node(1)->toString;
close $xml;

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In reply to Re: UTF8 issue with XML::XPath by Corion
in thread UTF8 issue with XML::XPath by jodaka

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