Compatibility between Astah Products - Astah

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File Compatibility

Astah files are forward compatible. If files are edited by a newer version, they cannot be opened in an older version of Astah.
Each version of Astah has a number called “Model Version“. Every file you create with Astah will have “Model Version” which help you find which version of Astah can read this file.

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How to find the model version

Launch Astah and go to [Help] – [Version Information] from Main Menu.
[Version Information] dialog appears to tell you which version of Astah you are using.

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Astah Pro, UML, and Viewer

Model Version	37	38	39
Astah Professional	6.9, 7.0, 7.1, 7.2	8.0, 8.1, 8.2	8.3, 8.4.x
Astah UML	7.2	8.0, 8.1, 8.2	8.3, 8.4.x
Astah Viewer	-	8.1, 8.2	8.3, 8.4.x

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Astah System Safety

Files created with Astah System Safety are not compatible with other Astah Products.

Model Version	4	5	6	7	8
Astah System Safety's Version	3.0	4.0	5.0	6.0	7.0

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Astah SysML

Currently, all version of Astah SysML has the same model version (40).
Astah SysML files are not compatible with other Astah Products except for Astah System Safety v7.0 and later. You can load Astah SysML files (.asml files) in Astah System Safety but not the other way around.

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Astah GSN

Currently, all version of Astah GSN has the same model version (39).
Astah GSN files are not compatible with other Astah Products except for Astah System Safety v7.0 and later. You can load the Astah GSN files (.agml files) in Astah System Safety but not the other way around.