I changed my raspberry pi 3b+ by an identical one and moved SD and dongle to the new one, just to see if its possible to replace a pi in case of failure and have everything working without any worries.
The raspberry pi boots up, docker starts and launches HA, I can connect through the local IP (which changed because the router assigns IPs via the mac address), but I could not connect via Home Assistant Cloud.
I had to go there, turn off remote access and turn it on again.
Could this be fixed the next time? It would be much better if a raspberry pi could just be replaced without any worries