Where are the user configuration preferences stored?

[noehmeier]

Initial Situation

We intend to utilize draw.io-Desktop within our organization using a preconfigured software package. We can set predefined settings in \AppData\Roaming\draw.io\config.json, which functions correctly.

Following software installation, users can modify their settings, such as language preferences. These changes are successfully saved and persist even after closing and reopening the application. We can verify these settings under Extras > Configuration... > Preferences.

Problem

Upon updating the software to a newer version, user preferences are reset to default settings (centralized package update, auto-update is disabled). We are unable to locate where user settings are stored. In the \AppData\Roaming\draw.io\ directory, we find two files: config.json and Preferences. However, neither of these files are updated when changes are made, nor do they reflect changes after a restart (e.g., changing the language).

Interestingly, we observe that changes are logged in \AppData\Roaming\draw.io\Local Storage\leveldb\000003.log, indicating modifications to the language setting and references to an .drawio-config file. After conducting a search of the entire AppData directory for the drawio-config string, we were unable to locate any occurrences.

Could you please inform us about the directory and file location of the individual user preferences and/or suggest methods to ensure their preservation after centralized software updates, preventing loss or overwrite of these settings?

Thank you in advance!