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/core/ReferencableStructure.java
* not.
	 * 
	 * @param memberName
	 *            the member name to check
	 * @return true if the member with the given name is referencable, otherwise
	 *         false
	 */
	public abstract boolean isReferencableProperty( String memberName );
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.core.Structure#getIntrinsicProperty(java.lang.String)
	 */
	protected Object getIntrinsicProperty( String propName )
	{
		if ( LIB_REFERENCE_MEMBER.equalsIgnoreCase( propName ) )
			return this.libReference;
		assert false;
		return null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.core.Structure#getProperty(org.eclipse.birt.report.model.core.Module,
	 *      org.eclipse.birt.report.model.metadata.PropertyDefn)
	 */
	public Object getProperty( Module module, PropertyDefn propDefn )
	{
		assert propDefn != null;