You can also write a small program to do the job:

my $elementHash = { MSGTEXT1 => 'CDATA[Starting SITUATION1 <311446961,
+2559575967> for K01.K01CSYSTE5',
                    MSGTEXT2 => 'CDATA[Starting Enterprise situation S
+ITUATION1 <311439572,1066403668> for K01.K01CSYSTE5.',
                  };  

foreach my $key ( keys %{ $elementHash } ) 
{
    my @tmp = parse_str( $elementHash->{$key} );
    print Dumper( \@tmp );
}

exit;


sub parse_str
{
    my $str = shift;
    my @items = split ' ', $str;
    my @tmp = split '\[', $items[0];
    my $size = $#items;
    my $param2 = ( $size > 4 ) ? $items[3] : $items[1];
    ( $tmp[1], $param2, $items[ $size ] );
}
[download]

Dumped data:

$VAR1 = [
          'Starting',
          'SITUATION1',
          'K01.K01CSYSTE5'
        ];
$VAR1 = [
          'Starting',
          'SITUATION1',
          'K01.K01CSYSTE5.'
        ];
[download]