Event Type = Edit (Event Type ID 1010) is recorded twice when I create a document.

Hi,

I have a question about audit data in BI4.0 SP5.

Event Type = Edit (Event Type ID 1010) is recorded twice when I create a document.
Does anyone know why?

1.  I created a new document.
     a. Login the BI Launch Pad.
     b. Applications -> WebI Applications(Rich Internet Application).
     c. select e-fashion universe.
     d. select Year object ->Run query.
     e. Save this document(with new name).

2. After, I checked a audit data using a Audit-MSSQL.unx.
3. I selected Event StartTime,Event Id,Event Type,Action Id,Event Type Id.
4. It showed Event Type = Edit (Event Type ID 1010) 2 times in same time with defferent
    Event Id and Action Id.

ex.
Event Start   | Event Id                            |Event | Action Id                                          |Event Type
  Time            |                                           |  Type|                                                          | Id
------------------------------------------------------------------------------------------------------------------------------
12/9 1:00:00| 6758586512627171687|Edit  |CgCwUG76sk9HmwzhhjjLpZsc6f  | 1010
12/9 1:00:00| 6758586512627171688|Edit  |CgCwUG76sk9HmwzhhjjLpZsc73 | 1010

5. I Added Event Detail Type and Event Detail Value.
6. It showed same size, same Universe ID, same Universe name in each event_ID.

ex.
  Event Id                              | Event Detail  Type| Event Detail Value
  ---------------------------------------------------------------------------------------------
  6758586512627171687 | size                        | 0
  6758586512627171687 | Universe ID           |UnivCUID=aaaaa
  6758586512627171687 | Universe name     |eFashion

  6758586512627171688 | size                        | 0
  6758586512627171688 | Universe ID           |UnivCUID=aaaaa
  6758586512627171688 | Universe name     |eFashion

                    
Does anyone know the reason?

Thanks,

Chiaki