I found a clue to the disappearing records here Re: How do i create array of arrays. Changing: 
push (@records, \@temp) if @temp;

[download]
to: 
push (@records, [@temp]) if @temp;

[download]
Gets around the problem of my records being over-written. I welcome any pointers on the rest of the code or the overall strategy. TIA

In reply to Re: How to combine rows of a spreadsheet by wrinkles
in thread How to combine rows of a spreadsheet by wrinkles

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