Here is my scenario. I'm running Sophos UTM 9 in active/passive HA mode. I know that I can reserve a node during the update process so that this node remains on the current version and the other node is updated. However, once I do update the second node and make that node "primary", in the event I do find issues with the new version and want to revert to the previous version, will I need to reinstall from ISO or is there a simpler way of having the reserved node (still running the previous version) somehow copy or overwrite the new updated node?
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