mev_PO_Requisition__c[] lpo = [select id,name,ao_po_id__c,copiedfromaopo__c from mev_PO_Requisition__c where copiedfromaopo__c = true];
  map<id, id> poidmap = new map<id,id>();
  set<id> lpoids = new set<id>();
  note[] newNotes = new list<note>();

  if(lpo.size()>0) {
    for(mev_PO_Requisition__c po: lpo) {
      poidmap.put(po.ao_po_id__c,po.id);
      lpoids.add(po.ao_po_id__c);
    }
    notes = [select id, parentid, title, isprivate, body, ownerid from note where parentid in :lpoids];
    if (notes.size()>0) {
      for(note n: notes) {
        id tmpid = poidmap.get(n.parentid);
        note nn = new note(parentid=tmpid,title=n.title,isprivate=n.isprivate,body=n.body,ownerid=n.ownerid);
        newNotes.add(nn);
      }
      insert newNotes;
    }

  }