I don't know whether it's against the rules of XML (I seriously doubt it!) but I've met way too many cases when the other party insisted that the tags are in a specific order so I would be very wary of changing the order. I'd suggest XML::Twig or XML::Rules for this and processing the whole records. If there are hundreds of thousands of them i do think it's safe to assume the individual records are rather small.

Jenda
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In reply to Re^2: Modifying Records with XML::SAX::ByRecord by Jenda
in thread Modifying Records with XML::SAX::ByRecord by Lorphos

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