Then your Homey sends updates via Mqtt to HA and that’s changing entities in HA and they are synced back to Homey…
You can deactivate all devices in MqttHub that are real HA entities and that should only ve synced from HA to Homey.
In MqttHub there should only be devices activated which are created in Homey and should be synced from Homey to HA (for a dashboard).
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