While working on a "adf" document, if we select a object and delete it, usually all IDE's/editors show a "*" beside the document name - which reminds us that we changed something on the document. This behaviour is not happenning here.
Also, while exporting to pdf, the file type says "Adobe PDF Files (*pdf) (*pdf)" - the *pdf is displayed 2 times - may be another inteneded behaviour?
You are right, ARIS Express does not display a '*' next to the document name if you change the document. However, if you try to close the document or the application, ARIS Express will remind you that there are unsafed changes. So you will not lose your changes ;-)
Regarding the *.pdf displayed twice, this looks like a bug. We will fix it.
The second problem you report (*.pdf shown twice) was added to the list of know issues.
The first problem is intended behaviour. Office 2007 also does not visualise the status of a file in the window title. It seems that there is no common agreement how this must be done.
Regards,
Sebastian