Sounds like you are manipulating the file contents instead of using the official API. 
    use YAML qw(LoadFile DumpFile);
    my $ref = LoadFile 'name';
    $ref->{modify} = 'something';
    DumpFile 'name', $ref;

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In reply to Re: How to make changes in yaml file thorugh perl by daxim
in thread How to make changes in yaml file thorugh perl by Anonymous Monk

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