Thanks apl! Still muddling through this. When I do a data dumper my hash looks like this: 
$VAR1 = {
'MIXORD077768' => 'MIXORD077769'
};

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What's mixing me up is why the hash is mapping like that? The data in the partlist.txt file is: 
MIXORD077769
MIXORD077768

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In reply to Re^6: Looping through a file by baixiaohu
in thread Looping through a file by baixiaohu

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