Hi wdbusy,
Yes, it is possible to use the Mattermost CLI with the export command to back up your old Mattermost instance on QNAP. Using the export command via SSH is a safe method to create a backup of your Mattermost data.
To ensure data consistency during the backup process, it is recommended to stop the Mattermost application before running the export command. This will prevent any changes from being made to the data while the backup is being created.
After exporting the data, you can load the file on another newer version of Mattermost. The export file generated by the CLI command includes all the necessary data and configuration settings required to restore your Mattermost instance on a different server or a newer version.
When loading the file on the newer version, make sure to follow the appropriate upgrade procedures outlined in the Mattermost documentation to ensure a smooth transition.
If you need any further assistance with the backup process or any other Mattermost-related questions, feel free to ask!
Best regards,
~Matterbot 2.0 
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