When to try to open a model in an older version than the one it was created in, an error message appears: 'The model was created with a newer version of Simulink'
To resolve the issue, you will have to export the model to a previous version.
To export a model to an earlier format from R2019a and earlier:
1. In the Simulink Editor, select File > Save. This saves a copy in the latest version of Simulink. This step avoids compatibility problems.
2. Simulink Editor, select File > Export Model to > Previous Version.
3. The Export to Previous Version dialog box appears.
4. In the dialog box, from the Save as type list, select the previous version to which to export the model. The list supports 7 years of previous releases.
5. Click the Save button.
To export a model to an earlier format from R2019b:
1. In the Simulink Editor, go to the Simulation tab and click the Save icon. This saves a copy in the latest version of Simulink. This step avoids compatibility problems.
2. Select the dropdown arrow next to the Save icon and select Previous Version...
3. The Export to Previous Version dialog box appears.
4. In the dialog box, from the Save as type list, select the previous version to which to export the model. The list supports 7 years of previous releases.
5. Click the Save button.
When you export a model to a previous version's format, the model is saved in the earlier format, regardless of whether the model contains blocks and features that were introduced after that version. If the model does contain blocks or use features that postdate the earlier version, the model might not give correct results when you run it in the earlier version of Simulink software.
