yesterday, by
nhinkle It's fine to flag them, if somebody does see the flag in time to stop it that can be helpful, but it's not a crisis if we miss it, nor is it a problem if the flag is rejected. Remember that when we see flags in the queue we just see the current state of the question, so it's not readily apparent that at the time of the flag, a post like that was on the verge of being migrated. From that perspective it makes sense to decline, but again, a few declined flags really isn't an issue.