Attachment
var current = new GlideRecord('incident'); current.get('9e0fce1f4f032200af7901f18110c771'); gs.print(current.number);
var sa = new GlideRecord('sys_attachment'); sa.get('c9689dc94f132200af7901f18110c766'); copyAttachment(current, sa);
function copyAttachment(_targetRec, _attachmentRec) {
var StringUtil = GlideStringUtil;
var sa = new GlideSysAttachment();
var newAttach = new Attachment();
binData = sa.getBytes(_attachmentRec);
var sysIdNewAttachment = newAttach.write(_targetRec.sys_class_name, _targetRec.sys_id, _attachmentRec.file_name, _attachmentRec.content_type, binData);
}