If you have an MQTT Transmission History Store configured with data stored that you no longer want to be transmitted the next time MQTT Transmission connects to a server:

  1. Disable MQTT Transmission

  2. On the file system, identify the History store and delete the file
    1. File(s) are located in the directory when Ignition is installed ~/user-lib/cls/data/h2
    2. File naming convention is "HistoryStore Name"-xxxxx.mv.db where xxxxx is the internal ID of the history store

  3. Enable MQTT Transmission
    1. If the History Store configuration is enabled, a new history store will be created
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