Are Visio 2002 and 2003 files compatible with Visio 2007, and vice versa?
Yes. You can open and use any Visio diagram from any previous version in Visio 2007. You can open a Visio 2007 diagram directly in Microsoft Visio 2003. You can also save a Visio 2007 drawing in Visio 2002 or Visio 2000 format. Note: Some functionality specific to Visio 2007 may be unavailable after saving your diagram in a previous version.