Hi SJr,

Thanks for your post.

Sorry but this option has been removed since version 6.7 as you point out.
Please follow the step below to enable this option by editing the Astah's property file.

1) Open "JudeP.properties" with text editor. You can find "JudeP.properties" file in Userhome\.astah\professional

2) Search for the following line:

3) Change its value to true as below. If you could not find the line, please add one in as below.

4) Save the "JudeP.properties" and launch Astah

Now all the Interfaces drawn by dragging and dropping from the Structure Tree onto Diagram should appear in rectangle notation.

Cheers,
SJ