Advanced

Model File Import / Export

Export and restore a current model configuration as a .tmm.json file

Use a .tmm.json model file to save the current model configuration, move it to another computer, or send it to a collaborator. The file preserves the configuration that Dreapex TMM needs to rebuild the model. It does not carry calculation results.

Use case	Recommended action
Archive candidate designs	Export each design as a separate `.tmm.json` file
Move a model to another computer	Export the file, then import it in Dreapex TMM on the other computer
Protect work before loading a built-in example	Export the current model before opening a Case Library entry
Send a reproducible setup for review	Send the `.tmm.json` file together with any result screenshots needed for the discussion

Entry points

The adjacent Import and Export controls follow Stop in the top toolbar. Export is the name shown by the application; its downward-arrow is only an icon.

The Import and Export controls in the top toolbar, outlined in red.

The red outlines are documentation annotations. They identify the two controls without changing the labels shown by the application.

Control	Action
`Import`	Select one local `.tmm.json` model file
`Export`	Save the current model configuration as a `.tmm.json` file

File format and scope

Item	Current behavior
File extension	`.tmm.json`
File contents	Readable, formatted JSON for the current model configuration
Default export name	`tmm-project-{YYYY-MM-DD}.tmm.json`
Import acceptance	The file name must end in `.tmm.json`; import one file at a time
File-size limit	10 MB
Not included	`Results`, `Settings`, `Logs`, and temporary UI state

Export flow

Click Export in the top toolbar.
The browser saves a file named tmm-project-{YYYY-MM-DD}.tmm.json unless you rename it in the browser.
A successful export shows Model exported and Downloaded {fileName}..

Export success notification after a real model-file export.

Downloaded {fileName}. is the detail text of the success notification. It is not the name of the Export control.

Export does not start a calculation. It saves the model configuration that is currently open, including a configuration that still needs parameter corrections.

Import flow

Click Import in the top toolbar.
Select one .tmm.json file.
Dreapex TMM checks the file name, size, JSON content, and version before offering to replace the current model.
The Import Model File confirmation dialog states that the current model will be replaced and that Settings and Logs are unaffected. Choose Import & Replace to apply the file, or Cancel to keep the current model.

Import confirmation dialog for a real exported model file.

After a complete import, the notification reads Model loaded from file; its detail identifies the file and the version that was applied. If part of a file cannot be used, the notification reads Model imported partially and asks you to review the reset settings.

Import messages

Situation	What Dreapex TMM reports	Action
File name does not end in `.tmm.json`	`Import failed`	Select a `.tmm.json` model file. A plain `.json` file is not accepted.
More than one file is selected	`Import failed`	Import exactly one model file.
File is larger than 10 MB	`Import failed`	Export the model again, then confirm that the selected file is the model file.
File is not valid JSON	`Import failed`	Obtain a new export instead of editing a damaged file.
File is not a TMM project file	`Import failed`	Confirm that the file was exported from Dreapex TMM.
File was created by a newer TMM version	`Import failed`	Update Dreapex TMM and try again.
File is corrupted or incompatible	`Import failed`	Obtain a new export from the source model.

Dreapex TMM checks a model file's version before it opens the replacement dialog. A file created by a newer app version is not applied. Update the app first, then import the file again.

Import restores model configuration, not calculation output. Run the required calculation again after importing so that Results correspond to the restored model.

Goal	Choose
Send or archive a model configuration	`.tmm.json` through `Export` and `Import`
Send a one-click link	URL Config Sharing
Start from a built-in example	Case Library

Case Library

One-click access to 11 built-in thin-film and emitting-device examples

URL Config Sharing

Load complete model configurations from a single URL