Apologies - I am the OP... I thought it may make the question too long if I gave full source code for our script, but thought it may be useful to anyone trying to recreate the scenario - so I added it as a reply.

In reply to Re^3: Replacing XML::Simple XMLout with Lib::XML by amasidlover
in thread Replacing XML::Simple XMLout with Lib::XML by amasidlover

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