In version 7.5.2 of Rational Rhapsody, the user interface allowed you to define entry and exit actions in the features window for the top-level state in a sub-statechart. This behavior has been changed in version 7.5.3. Now, these fields are disabled in the features window for the top-level state in a sub-statechart.
In version 7.5.3, if you generate code for an existing model where entry or exit actions have been defined for the top-level state in a sub-statechart, these actions are not reflected in the generated code. However, they will still be displayed in the relevant fields in the features window. If you want to remove these actions, open the model in version 7.5.2 and manually remove the defined actions, and then reopen the model in 7.5.3.