I am having trouble with XML::DifferenceMarkup module. I have been using this module due to its speed but now I have discovered a problem with the make_diff method and I am usure if its due to the XML's format or truly a bug within the module. The problem is that a completely new element does not show up as an dm:insert but rather as an update as well as defining child elements of dm:delete and dm:insert where no true difference exists

Basically I receive an XML file on a daily basis from each server and then store it into a relational database, upon the next received XML for that server I perform a make_diff against the old_xml and new_xml which results in my insert/update/delete xml that I use to CRUD my database. I use this module as its extremely fast compared to all the other xml difference modules I have investigated. But I guess speed isn't beneficial if the difference results don't function correctly.

I have a simple snippet of code to perform the make_diff as follows:

use XML::DifferenceMarkup qw(make_diff);
use XML::LibXML;

my $old_xml = $ARGV[0];
my $new_xml = $ARGV[1];

my $parser = XML::LibXML->new();
$parser->keep_blanks(0);
my $d1 = $parser->parse_file($old_xml);
my $d2 = $parser->parse_file($new_xml);

my $dom = make_diff($d1, $d2);
print $dom->toString(1);
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I have the sample xml (old and new) that I experience the issue with and can email the xml if someone is interested in helping me try and figure out what the issue is. I can also provide specifics with regard to particular element that I have identified as a problem.