Problem in MISP/app/Lib/Export/NidsExport.php /
causes there are two rows in beggening of all rules regarding email. Bug is in row 161

case 'email':
$this->emailSrcRule($ruleFormat, $item['Attribute'], $sid);
$this->emailDstRule($ruleFormat, $item['Attribute'], $sid);
break;
this causes inserting both source and destination email at beggining of the file, then continues with the correct source / destination emails.