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/ModuleHandle.java
* Returns the iterator over all config variables. Each one is the instance
	 * of <code>ConfigVariableHandle</code>.
	 * <p>
	 * Note: The configure variable in library file will be hidden if the one
	 * with the same name appears in design file.
	 * 
	 * @return the iterator over all config variables.
	 * @see ConfigVariableHandle
	 */
	public Iterator configVariablesIterator( )
	{
		return getFilteredStructureList( CONFIG_VARS_PROP,
				ConfigVariable.NAME_MEMBER ).iterator( );
	}
	/**
	 * Returns the iterator over all structures of color palette. Each one is
	 * the instance of <code>CustomColorHandle</code>
	 * 
	 * @return the iterator over all structures of color palette.
	 * @see CustomColorHandle
	 */
	public Iterator customColorsIterator( )
	{
		return getStructureList( COLOR_PALETTE_PROP ).iterator( );
	}
	/**
	 * Drops a config variable.
	 * 
	 * @param name
	 *            config variable name