Assume that you try to edit a UML or database diagram that was created in Visio 2010 or in an earlier version of Visio by using Microsoft Visio 2013. However, the legacy UML features are missing. Additionally, you receive the following message in the message bar and in the information pane:
This UML Model Diagram was created with a feature that is not supported in this version of Visio. Editing of the diagram is limited and may result in the diagram not working in earlier versions of Visio.