map {Encode::encode("utf-8", $_)} @FileData;
Shouldn't you be saving the result of the map? 
@FileData = map {Encode::encode("utf-8", $_)} @FileData;

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Unless I state otherwise, all my code runs with strict and warnings

In reply to Re: Text file to UTF-8 encoding by FunkyMonk
in thread Text file to UTF-8 encoding by dexter29

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