After the download is complete, drag the downloaded .jar file to an open instance of Astah. A pop-up will appear asking you to confirm installation choose [Yes].
If you see the [Export XMI] option under [Tools], that means your installation is complete!
(In some cases, [UML] and [CMOF] menu would be added under [Plug-ins].)
How to Use
Open a file and go to [Tools] – [Export XMI] and select [UML] or [CMOF]. (Or [UML] or [CMOF] directly under [Plug-ins].
Choose a location for the XMI file to be exported to and then select [Save].
Packages, Subsystem (Subsystems will be exported as Packages), Classes, Interfaces, Attributes, Operations, Association Classes, Notes which are connected with models, Associations, Dependencies, Generalizations, Realizations and Usages will be exported.
Stereotypes and Qualifiers will not be exported.
When exporting in CMOF format, the following models would be converted to comply with the constraints of CMOF 2.4.1’s.
Visibilities of properties would be public
“Aggregate” Association End’s would be Composite (Shared)