The list of received packets used to send acknowledgements also remains unaffected as the packet number space is associated with a path.
and
The peer, that sends the MP_RETIRE_CONNECTION_ID frame, can keep sending data using the same IP addresses and UDP ports previously associated with that connection ID, but has to use a different connection ID when doing so.
These are just plain RFC 9000 behavior and might not be mentioned here explicitly.
and
These are just plain RFC 9000 behavior and might not be mentioned here explicitly.