File Gambar lain berubah ketika dilakukan pengeditan

Assalamualaikum Warahmatullahi Wabarakatuh...
 
Mas, saya ingin menanyakan tentang pengeditan file. 
contoh:
Dalam satu record terdiri dari 5 atribut file gambar, katakanlah atribut a,b,c,d,e. kelima atribut gambar tersebut telah terisi. Namun ada perubahan pada file gambar pada atribut c, ketika dilakukan perubahan pada atribut c, maka file gambar a,b,d dan e menjadi kosong. Kira2 solusi nya seperti apa ya mas, mohon pencerahannya. Berikut ini saya lampirkan potongan controller editnya
 
function FO_Edit(){
        //cek_session_akses('izinbidan',$this->session->id_session);
        $id = $this->uri->segment(3);
        if (isset($_POST['submit'])){
            $config['upload_path'] = 'asset/izin/';
            $config['allowed_types'] = 'gif|pdf|jpg|png|JPG|JPEG';
            $config['max_size'] = '3000'; // kb
 
            $this->load->library('upload', $config);
 
 
 /*           if($this->upload->do_upload('h2')){
                $lmp_ijasah=$this->upload->data();
            }
 */          
 
            $hasil0 = null;
            $hasil = null;
            $hasil2 = null;
            $hasil3 = null;
            $hasil4 = null;
            $hasil5 = null;
            $hasil6 = null;
            $hasil7 = null;
            $hasil8 = null;
 
            if($this->upload->do_upload('i2'))
            {
                $hasil0=$this->upload->data();    
            }
 
            if($this->upload->do_upload('j'))
            {
                $hasil=$this->upload->data();
            }
            if($this->upload->do_upload('k'))
            {
                $hasil2=$this->upload->data();
            }
 
            if($this->upload->do_upload('l'))
            {
                $hasil3=$this->upload->data();
            }
            if($this->upload->do_upload('m'))
            {
                $hasil4=$this->upload->data();
            }
            if($this->upload->do_upload('n'))
            {
                $hasil5=$this->upload->data();
            }
            if($this->upload->do_upload('o'))
            {
                $hasil6=$this->upload->data();
            }
            if($this->upload->do_upload('p'))
            {
                $hasil7=$this->upload->data();
            }
            if($this->upload->do_upload('q'))
            {
                $hasil8=$this->upload->data();
            }
            echo $hasil['file_name'];
            echo $hasil0['file_name'];
           // exit;
            $config['wm_text'] = '';
            $config['wm_type'] = 'text';
            $config['wm_font_path'] = './system/fonts/texb.ttf';
            $config['wm_font_size'] = '26';
            $config['wm_font_color'] = 'ffffff';
            $config['wm_vrt_alignment'] = 'middle';
            $config['wm_hor_alignment'] = 'center';
            $config['wm_padding'] = '20';
            $this->load->library('image_lib',$config);
            $this->image_lib->watermark();
            {
                $data = array('tahun_lulusan'=>$this->db->escape_str($this->input->post('c')),
                'nomor_str'=>$this->db->escape_str($this->input->post('d')),
                'tanggal_pengajuan'=>$this->db->escape_str($this->input->post('d1')),
                'nomor_rekomendasiop'=>$this->db->escape_str($this->input->post('e')),
                'tempat_praktik'=>$this->db->escape_str($this->input->post('e1')),
                'praktik_sebagai'=>$this->db->escape_str($this->input->post('e2')),
                'alamat_praktik'=>$this->db->escape_str($this->input->post('f')),
                'kecamatan'=>$this->db->escape_str($this->input->post('h')),
                'desa'=>$this->db->escape_str($this->input->post('i')),
                'lamp_ijasah'=>$hasil0['file_name'],
                'lamp_ktp'=>$hasil['file_name'],
                'lamp_str'=>$hasil2['file_name'],
                'lamp_sksf'=>$hasil3['file_name'],
                'lamp_rekomendasi'=>$hasil6['file_name'],
                'lamp_pernyataan'=>$hasil7['file_name'],
                'lamp_kuasa'=>$hasil8['file_name'],
                'masa_berlaku_izin'=>$this->db->escape_str($this->input->post('r')),
                'no_sertfikat_bidan'=>$this->db->escape_str($this->input->post('s'))
                );
            }
            $where = array('izin_id' => $this->input->post('id'));
            $this->model_app->update('izin', $data, $where);    
 
 
            // Update data pemohon
            $dataPemohon = array('foto'=>$hasil5['file_name']);
            $wherePemohon = array('pemohon_id' => $this->input->post('id'));
            $this->model_app->update('pemohon', $dataPemohon, $wherePemohon);
 
 
            redirect('izin');
        }else
        {
           // $record = $this->model_app->view_ordering('kecamatan','id_kec','DESC');
             $record = $this->model_app->view_where_ordering('kecamatan', array('id_kab' => '1221'), 'id_kec','DESC');
             $recorddesa = $this->model_app->view_ordering('kelurahan','id_kec','DESC');
 
 
                $this->db->select('*');
                $this->db->from('izin');
                $this->db->join('pemohon','pemohon.nik=izin.nik');
                $this->db->join('kabupaten','kabupaten.id_kab=izin.kabupaten');
                $this->db->join('kecamatan','kecamatan.id_kec=izin.kecamatan');
                $this->db->join('kelurahan','kelurahan.id_kel=izin.desa');
                $this->db->where('izin.izin_id',$id);
 
 
                $query=$this->db->get();
                $data = array('record' => $record,'recorddesa' =>$recorddesa);
               // $data = array('recorddesa' => $recorddesa);
                //$data = array('recorddesa' => $recorddesa);
 
                $data['rows']= $query->row_array();
                $this->template->load('administrator/template','administrator/mod_perizinan/FO_Edit',$data);
 
 
        }
 
    }
 
Terima Kasih.