|  |  | @@ -275,7 +275,9 @@ def shot_request_send(request, administrator): | 
            
            
              | 275 | 275 |      req.express_com = express_com | 
            
            
              | 276 | 276 |      req.tracking_number = tracking_number | 
            
            
              | 277 | 277 |      req.request_status = TenancyShotRequestInfo.TENANCY_TRACKING_SEND | 
            
            
              | 278 |  | -    req.request_status_at = {TenancyShotRequestInfo.TENANCY_TRACKING_SEND: tc.utc_datetime()} | 
            
            
              |  | 278 | +    request_status_at = req.request_status_at | 
            
            
              |  | 279 | +    request_status_at[TenancyShotRequestInfo.TENANCY_TRACKING_SEND] = tc.utc_datetime() | 
            
            
              |  | 280 | +    req.request_status_at = request_status_at | 
            
            
              | 279 | 281 |      req.save() | 
            
            
              | 280 | 282 |   | 
            
            
              | 281 | 283 |      if tracking_number and tracking_number != old_tracking_number: |