Bug 135265 Paste to a wrong column
Steps to reproduce: 1.Open the attached file 2.Choose the column[2] which contains a label , copy and paste to column[3] Expected result: It will be pasted to column[3] Actual result: It is pasted to column[4] The related bug is #103448
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ColumnBandAdapter.java
/**
	 * Returns copied cells with the column number.
	 * 
	 * @param columnNumber
	 *            the column number
	 * @return new cell instances
	 */
	abstract protected List getCellsUnderColumn( int columnNumber );
	/**
	 * Returns copied cells with the given slot and column number.
	 * 
	 * @param handle
	 *            the slot
	 * @param columnIndex
	 *            the column number
	 * @return new cell instances
	 */
	protected List getCellsInSlot( SlotHandle handle, int columnIndex )
	{
		List retValue = new ArrayList( );
		for ( int i = 0; i < handle.getCount( ); i++ )
		{
			RowHandle row = (RowHandle) handle.get( i );
			CellHandle cell = getCellsInRow( row, columnIndex );
			if ( cell != null )
				retValue.add( cell );
		}
		return retValue;
	}
	/**