> For the complete documentation index, see [llms.txt](https://docs.irs.systems/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.irs.systems/ltt/documentation/ltt-gui-manual/configuration/configurationmanager.md).

# Configuration Manager

The configuration manager is your central point to save and restore LTT GUI configurations.

![Configuration Manager](/files/180ns4WF8BtlrpCpmKf2)

There are 3 common use cases:

1. backup an existing LTT configuration for a project
2. export a LTT configuration to transfer it from one LTT to another
3. switch between different projects

## Backup

![Backup](/files/K4v0q0rFCL7JpM8DDm53)

By making a backup you create a snapshot of your current LTT configuration. You can later revert to that backup configuration anytime. The backup will include the following data:

* station configuration (number of stations, DUT types, groups, signals)
* limit configuration
* operation modes + parameters
* main configuration (ltt\_main\_configuration.xml)
* MesSy configuration (ltt\_messy\_config.xml)
* hardware configuration (ltt\_module\_config.xml)
* recording configuration (ltt\_recording\_config.xml)
* history configuration (ltt\_history\_config.xml)
* all test related data
  * DUT's
  * test orders
  * error counters

## Export

![Export](/files/XlphECw6zcdmGFfw0nEd)

The **Export** button will save the same configuration as **Backup** but without test related data. This is useful if you want to transfer the configuration from LTT to another of the same kind.

## Import

![Import](/files/hywJdt7SM92Eupkiomew)

To import a configuration just select a previously exported configuration zip file.

{% hint style="warning" %}
Your current configuration will be irreversibly overridden! The GUI will be automatically restarted.
{% endhint %}

## Switch projects

With the help of the configuration manager you can even switch between 2 or more completely different projects (with different DUT types, DUT's, signals, limits, etc.).


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