Astah User's Guide
A Project can be compared with the working Project as follows:
The differences between the working Project and the compared Project are displayed in the Conflict Tree.
You can compare two diagrams visually by clicking [Show Diagram difference] button.
This pulls out a new window with two diagrams side by side with marks.
You can filter the changes by the type of change such as "Added", "Deleted" and "Modified".
Since version 8.2, "hide differences in appearance" option is available.
Checking this option will make only the modified models have mark on. So models with presentation change such as color changes and subtle re-location will not be detected as a difference.
The result of the project comparison can be exported into a .csv file.