On meta, when a question you've answered is migrated, you will receive a banner at the top of the screen:
However, if I am on the page and the person responsible for migrating the question because:
- I'm a moderator and I migrated it through the close dialog
- I am the last person to cast a vote which caused it to be migrated
And the page refreshes, don't nag me on the page refresh, as, well, it's obvious because I've performed the action:
It's easy enough to dismiss, but it's an unnecessary nag in this specific case.