superuser.com/questions/1166348/how-to-subtract-year-from-date was just voted closed. All 5 votes were to migrate it to SO, which I thought automatically migrated it. However, it was simply closed. Just curious whether I was mistaken about the process.

The process likely auto-rejected migration because their SO profile is in poor standing

@fixer1234 Huh? it was migrated (7 hours ago).

@DavidPostill, yeah, I spotted that maybe an hour after asking the question. I guessed that either a moderator migrated it, or it's a 2-step process for the system--close here and then migrate, and there could be system reasons why the actual migration might be delayed a little. Normally it appears concurrent.

@fixer1234 I don't see anything odd in either of the timelines

@DavidPostill, interesting. The timelines could reflect rounding to the nearest hour, and the migration was less than half an hour later. Another possibility: it was actually almost concurrent but the status wasn't immediately updated on my machine. Normally, a migration appears to be instantaneous upon closure--the first thing seen when the question's status changes is migration. In this case, mine was the last of 5 migration votes, and the status changed to closed.

I asked the question here and later saw that the status showed that it had been migrated.

It could quite easily have been some caching artefact, I've seen something similar happen very occasionally...

But generally if it just says [closed] outright it means that they are question banned on the target site