I was fooling around yesterday (carefully to not loose anything) and
- Saved the current project,
- Go back to the Finder,
- Change the project file name,
- Back in the IDE: the file name change was not updated,
- The IDE save the project using the previous file name (of course with current creation/modification dates)
Doing that with TextEdit (Apples application) produce far different result: the file name is changed once you go back to the application.
Status ? (normal / bug / whatever else ?)