GrandFather already pointed out that if you ignore structural differences (like child ordering) you are after semantic difference(s) between the two files: I haven't looked at the suggested modules, but just reading their names I guess that the one will help you out the most is...I'll let you guess which one ;)

In reply to Re^3: Comparison of XML files ignoring ordering of child elements by markong
in thread Comparison of XML files ignoring ordering of child elements by adikan123

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