Bug 123036 Data in a reprot is doubly stored
We currently stored data twice. Once in the content stream, once by DtE. The instance stored by content stream should not be there.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ResultIterator.java
{
		if ( useDetails == false )
		{
			logger.logp( Level.FINE,
					ResultIterator.class.getName( ),
					"getStartingGroupLevel",
					"return the starting group level" );
			return savedStartingGroupLevel;
		}
		logger.logp( Level.FINE,
				ResultIterator.class.getName( ),
				"getStartingGroupLevel",
				"return the starting group level" );
		return odiResult.getStartingGroupLevel( );
	}
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getEndingGroupLevel()
	 */
	public int getEndingGroupLevel( ) throws DataException
	{
		logger.logp( Level.FINE,
					ResultIterator.class.getName( ),
					"getEndingGroupLevel",
					"return the ending group level" );
		return odiResult.getEndingGroupLevel( );
	}
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getSecondaryIterator(java.lang.String,
	 *      org.mozilla.javascript.Scriptable)
	 */