Object in DB Error after using addObjectToBothSidesOfRelationshipWithKey

Hello,

I am having problems with addObjectToBothSidesOfRelationshipWithKey.
It is my understanding that if I wish to add a new object (not in a
editing context) to an object's relationship (in an editing context)
where the relationships are in place. I can do it in the following
way...

1. insert newObject into context
2. objectInContext. addObjectToBothSidesOfRelationshipWithKey(
newObject, "relationshipName")
3. context.saveChanges()


But everytime I do the following steps

1. Create book object and save to the db
2. Create a Summary Object and insert it in the default editing context
3. Use addObjectToBothSidesOfRelationshipWithKey to add the summary
object to the book. ( Note the book is in the default editing context
because I fetch from the db)
4. using savechanges() on the default editing context.

THIS WORK WITH NO PROBLEMS

5. Create article object ans save to the db (WORKS)
6. Create a Summary Object and insert it in the default editing context
7. Use addObjectToBothSidesOfRelationshipWithKey to add the summary
object to the Article. ( Note the article is in the default editing
context because I fetch from the db)
8. using savechanges() on the default editing context.

I GET THIS ERROR

---------------------------------------------------------------------------------------------------
java.lang.IllegalStateException: recordInsertForObject:
com.webobjects.eoaccess.EODatabaseContext
com.webobjects.eoaccess.EODatabaseContext@a3cf3e found a snapshot for EO
with Global ID:_EOIntegralKeyGlobalID[Article (java.lang.Integer)4] that
has been inserted into
com.webobjects.eocontrol.EOEditingContextcom.webobjects.eocontrol.EOEditingContext@ad44f6.
Cannot insert an object that is already in the database

---------------------------------------------------------------------------------------------------

Note, the relationships are ok in all the objects... I test it in
reverse order adding the article first and then the book I get the same
error but with it state the book is already in the DB..

I do not know what I am doing wrong..... you someone please help
clearify my mistake.

thank you,
richard

CODE
-----------------------------------

public void appendToResponse (WOResponse response, WOContext context)
	{
		
		aSummary = new Summary();
		aKeyPoint = new KeyPoint();
		aTerm = new Term();
		
			// I will first find if the user has a current reading
			// if I will make it not the current reading and then set the 
			// newCurrentReading as the user's current reading 
			
			EOEditingContext ec = session().defaultEditingContext();
			Session s = ( Session )session();
			
			
			// find the current reading if any
			// this not the must efficient way but easy to code and read
			//
			Enumeration enumeration =
s.sessionUser().articles().objectEnumerator();
			

			while( enumeration.hasMoreElements() ) {
				Article anArticle = ( Article )enumeration.nextElement();
				if( anArticle.isCurrentReading().equals( "Yes" ) ){
					currentReadingArticle = anArticle;
					showCurrentArticle = true;
					showGeneralArticleInfo = true;
				}//end if
				
			}//end while
			
			
			enumeration = s.sessionUser().books().objectEnumerator();
			
			while( enumeration.hasMoreElements() ) {
				Book aBook = ( Book )enumeration.nextElement();
				if( aBook.isCurrentReading().equals( "Yes" ) ){
					currentReadingBook = aBook;
					showCurrentBook = true;
					showGeneralBookInfo = true;
				}//end if
				
			}//end while
			
		
		super.appendToResponse(response, context);
}


    public My_Rep_CurrentReading addSummary()
    {
My_Rep_CurrentReading nextPage =
        (My_Rep_CurrentReading)pageWithName("My_Rep_CurrentReading");

        // Initialize your component here
		EOEditingContext ec = session().defaultEditingContext();
		NSTimestamp currentTime = new NSTimestamp();
			
		
			aSummary.setEntryDate(currentTime);
		
			ec.insertObject( aSummary );
			
			if( showCurrentArticle )
			{
				currentReadingArticle.addObjectToBothSidesOfRelationshipWithKey(
aSummary, "summarys" );
			} 
			else if ( showCurrentBook )
			{	
				currentReadingBook.addObjectToBothSidesOfRelationshipWithKey(
aSummary, "summarys" );
			}	

			ec.saveChanges();

        return nextPage;
    }