MQTT migration

I have just recently moved from HA on a Pi to a NUC.
The NUC runs Proxmox with HAOS in a VM.
Following the above mentioned guide I had no issues to get HA back up an running.
I am now wondering, if I should move some of my addons out of the HA instance to run as separate LXC container. Such that these services continue to run, even if HA is being updated, or restarted.
Is there any guide on how to move the MQTT Broker from HA Add-On to an LXC.
Can the settings be migrated, would the home assistant mqtt entities be affected by this?