I took a look. My understanding is that the issue in this topic relates to a delayed agent join after it has been dispatched. I see this same behaviour in the logs for RM_inoeUnCnAUAr.
The other topic, Server-initiated migration fails to resume on agents 1.4.6 — subscriber + publisher PC fail, no recovery, process killed (expected fixed in >1.4.2 per agents #4705) - #10 by CWilson , when I compare the server logs for those rooms, I see no delay between the agent being dispatched and the agent joining (beyond what would be expected in normal operations). So, I believe these are different issues, but I defer to @CWilson as he has looked at this closer than me.