We have been utilizing GD&T for quite some time and just recently moved to Creo 4. With this version, the adoption of some checks for GTols were implemented, which is great new functionality. The Legacy Datum Annotation Conversion utility works well, but should be extended. There needs to be a workflow to convert Annotation Features to the new annotation methodology. The need for this is due to the fact that you should have either a Datum Tag or Datum Targets, not have the both for the same Datum.