Bug 156497 [Regression][Acceptance]Report isn't refreshed when delete used library file.
Description: Report isn't refreshed when delete used library file. Steps to reproduce: 1.New a library, add a label, input actuate. 2.New a report, extend lib.label 3.Delete the library file. 4.Refresh the report in Outline of the report Expected result: Empty label in Layout. Actual result: label with content "actuate" in Layout.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/LibraryRecord.java
assert overriddenValues != null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.activity.SimpleRecord#perform(boolean)
	 */
	protected void perform( boolean undo )
	{
		if ( add && !undo || !add && undo )
		{
			int toUpdateLibraryCount;
			if ( position == -1 )
			{
				module.addLibrary( library );
				toUpdateLibraryCount = module.getLibraries( ).size( ) - 1;
			}
			else
			{
				module.insertLibrary( library, position );
				toUpdateLibraryCount = position;
			}
			
			
			
			
			if ( add && !undo )
				resolveAllElementDescendants( );