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    my $existing_users = $dbh->selectall_hashref("SELECT `UserName`, `
+LastAccessDate`, `Ignore` FROM $status_database.`Status`",1);

    'user1' => {
        'UserName' => 'user1',
...
        'Ignore' => 'N',
        'LastAccessDate' => '0000-00-00'
    },

    send_to_sub(%{$existing_users});

...
        print Dumper(\$existing_users);
        exit;
    }